Brunner, E., View plot     S° = standard entropy (J/mol*K) Heat capacity at saturation pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature Temperature from 223.37 K to 320.177 K 35 experimental data points They chose this model because of its capability to predict properties of $water1ammonia% up to 20 MPa and 650 K, where experimental data are scarce for the VLE and virtually nonexistent for other properties. apologize for any inconvenience this outage may cause. HTML 5 canvas support. endorsement by the National Institute of Standards and Technology, USA, nor does it imply that the products are necessarily the best available for the purpose. Comparisons to available experimental data are given that establish the accuracy of calculated properties. Critical temperature measurement of liquids by means of differential thermal analysis, NIST webbook; bibliographic data; CCCBDB Experimental data. [all data], Fonseca and Lobo, 1989 in these sites and their terms of usage. Phys.     S° = standard entropy (J/mol*K) (1968). . NIST Webbook; Crippen Method; C p,gas: Ideal gas heat capacity (J/mol×K). InChI: InChI=1S/H8N2O4S/c1-5-7(3,4)6-2/h1-2H4 InChI Key: KTMPTTWZBSFVPI-UHFFFAOYSA-N Formula: H8N2O4S     H° = standard enthalpy (kJ/mol) : Read : The Shomate Equation will yield the most accurate estimate of the enthalpy change for an ideal gas. The nominal world-wide capacity of its manu­ facture for the year 1993-1994 is estimated to be in excess of 116 million metric tons. Owing to its large heat of vapor-J. We Heat capacity at constant pressure Cp. Soc., 1937, 59, 2, 254-259, https://doi.org/10.1021/ja01281a008 Links. Magnetic fields in vibrating-wire instruments have strengths of 1 T [14]. No inferences should be drawn on account of other sites being referenced, or not, from this page. National Institute of Standards and Notice: A plot could not be displayed here becuse plotting Chase, M.W., Jr., E/(2*t2) + G The literature data Data, Monograph 9, 1998, 1-1951. Moving the mouse pointer over or near a point will display the coordinates until midnight EST on Monday December 28. errors or omissions in the Database. Follow the links above to find out more about the data Chemical, physical and thermal properties of Ammonia, NH 3: Values at 25oC /77oF / 298 K and 1 atm., if not other temperature and pressure given. All extensive properties are given on a mass basis. Fluid Mixtures at High Pressures VI. Tables of heat capacity, enthalpy, entropy, and Gibbs free energy have been obtained from the analyses. H° − H°298.15= A*t + B*t2/2 + Select a region with data to zoom. We By selecting the following links, you may be leaving NIST webspace. Chern. H° − H°298.15= A*t + B*t2/2 + Eng. . How much heat is required to raise the temperature of the object with the mass and heat capacity you entered? data currently requires a JavaScript and HTML 5 canvas enabled browser. NIST/TRC Web Thermo Tables (WTT) NIST Standard Reference Subscription Database 3 - Professional Edition Version 2-2012-1-Pro This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. Director of the National Institute of Standards and Technology (NIST) on October 9, 2015. Go To: Top, Phase change data, References, Notes. ; Medvedev, V.A., It is 4.184 J / g ºC. If values are given for liquid ammonia at ambient temperature, the ammonia is pressurized above 1 atm. Basis Set Exchange; Computational Chemistry List; Thermochemistry in Gaussian; Minnesota Database Collection; Benchmark Energy and Geometry; Point Groups. Database and to verify that the data contained therein have Owing to its large heat of vapor-J. [all data], Brunner, 1988 4) The heat of vaporization of ammonia at its normal boiling point (-33.3°C) is +23.32 kJ/mol. Ref. 2. SRD 103a – Thermo Data Engine (TDE) for pure compounds. ; Wagman, D.D. Ref. Ref. Acta, 1977, 20, 27-30. Cp° = A + B*t + C*t2 + D*t3 + NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) [all data], Hentze, 1977 Ammonia is an important commercial fluid which ranks among the top ten bulk chemicals in terms of large-scale production. Ammonia is a colourless gas with a characteristic pungent smell and hazardous in its concentrated form. NIST subscription sites provide data under the The following components were used in generating the plot: Additonal code used was developed at NIST: E/t2 Δ f G°: Standard Gibbs free energy of formation (kJ/mol). and Informatics, Gas Phase Heat Capacity (Shomate Equation), Vibrational and/or electronic energy levels, Electron-Impact Ionization Cross Sections (on physics web site), Computational Chemistry Comparison and Benchmark Database, X-ray Photoelectron Spectroscopy Database, version 4.1, NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data), NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data). the value. … BasG: Gas basicity (kJ/mol). As for nitrogen, it is readily available… well, all around us… Uses polynomial obtained from CHERIC. in these sites and their terms of usage. Chem. Gaithersburg facility, this site will not be available from 7:00 pm ammonia. Price: ... heat capacity, enthalpies of phase transitions, critical properties, melting and boiling points, etc. Thermodynamics of liquid mixtures of xenon and methyl fluoride, The Heat Capacity and Vapor Pressure of Solid and Liquid. Enthalpy Change of Ammonia Using the IG Heat Capacity: 5 pts: Determine the enthalpy change and internal energy change of ammonia in J/mole, as it is heated from 350 K to 600 K, using the ideal gas heat capacity given by the Shomate Equation. Tables of heat capacity, enthalpy, entropy, and Gibbs free energy have been obtained from the analyses. Soc. by the U.S. Secretary of Commerce on behalf of the U.S.A. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 Mass spectra for over 33,000 compounds. [all data], Stull, 1947     T = temperature (K). Heat capacity c p: 47.99 J/(mol K) Liquid properties Std enthalpy change of formation Δ f H o liquid −390.76 kJ/mol Standard molar entropy S o liquid? Unusually high electrical conductivities of R32 samples were experienced in the NIST torsional-crystal viscometers and Move / hide legend (key). Ammonia Critical point - Critical temperature : 132.4oC - Critical pressure : 112.8 bar. intended to imply recommendation or endorsement by the National Your institution may already be a subscriber. Δ fus H°: Enthalpy of fusion at standard conditions (kJ/mol). Heat capacity at saturation pressure (Liquid in equilibrium with Gas) as a function of Temperature Temperature from 195.495 K to 405.3 K 43 experimental data points can be used for the calculation of all thermodynamic properties, including density, heat capacity, speed of sound, energy, and saturation properties. SRD 103b – Thermo Data Engine (TDE) for pure compounds, Ammonia gas is heated from 325 K to 750 K.Using the ideal gas heat capacity given by the Shomate Equation, calculate the ΔU and ΔH in J/mole. There may be other web sites that are more appropriate for your purpose. NIST Links. where Cp is the molar heat capacity; a, b, and c, are constants; and T is the temperature in degrees Kelvin. Vapor Pressure of Pure Substances. Toggle semilog (log Y) display if possible. Ammonia is an important commercial fluid which ranks among the top ten bulk chemicals in terms of large-scale production. click the mouse on the plot to revert to the orginal display. We have provided these links to other web sites because they may have information that would be of interest to you. Ammonia is a colourless gas with a characteristic pungent smell and hazardous in its concentrated form.. Chemical, physical and thermal properties of Ammonia, NH 3: Values at 25 o C /77 o F / 298 K and 1 atm., if not other temperature and pressure given. The purpose of the fee is to recover costs associated of the point. When you scroll down a bit farther on the Results Page of the NIST Webbook, you will find the constants for the heat capacity polynomial for Ammonia shown in a table like this: C p o = A + B*t + C*t 2 + D*t 3 + E/t 2 H o - H o 298.15 = A*t + B*t 2 /2 + C*t 3 /3 + D*t 4 /4 - E/t + F - Δ f H o 298.15 S o = A*Ln(t) + B*t + C*t 2 /2 + D*t 3 /3 - E/(2*t 2) + G. Lesson 3C Blog. Thermodynamic functions for ammonia as an ideal gas at one atmospheric pressure are presented in this report. NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) The list is probably 30 percent complete. Δ f H° gas: Enthalpy of formation at standard conditions (kJ/mol). Given : T 1: 350: K: T 2: 600: K: Find : ΔH 1-2 =??? Heat capacity ; Entropy; Phase transition enthalpies and temperatures; Vapor pressure; Reaction thermochemistry data for over 8000 reactions. Belg., 1921, 30, 62. Data compilation copyright By kJ/(kg.K) 5.1732E-1 BTU/lb∙°F 2164.474 J/kg∙K 5.1732E-1 kcal/kg∙K. At ambient pressure and temperature the isobaric specific heat, C P, of ammonia is 2.2 [kJ/kg K] or 0.52 [Btu/lb °F] = [cal/g K], while the isochoric specific heat, C V, is 1.6 [kJ/kg K] or 0.39 [Btu/lb °F] = [cal/g K]. Data from NIST Standard Reference Database 69: The National Institute of Standards and Technology (NIST) Ammonia Vapor pressure (at 21oC or 70oF) : 8.88 bar. All rights reserved. Because of uncertainties in the data used for obtain­ ing the heat of formation of perchloric acid, a method was chosen in which the heats of formation of the perchlorat.es were obtained in terms of the literature data on potassium perchlorate and on the corresponding chlorides.     t = temperature (K) / 1000. following TRC products: Go To: Top, Gas phase thermochemistry data, Phase change data, Notes, Cox, Wagman, et al., 1984 to midnight to until 5:00 am UTC on Tuesday December 29. Basis Set Exchange; Computational Chemistry List; Thermochemistry in Gaussian; Minnesota Database Collection; Benchmark Energy and Geometry; Point Groups. NIST Links.     t = temperature (K) / 1000. and Informatics, Vibrational and/or electronic energy levels, Electron-Impact Ionization Cross Sections (on physics web site), Computational Chemistry Comparison and Benchmark Database, X-ray Photoelectron Spectroscopy Database, version 4.1, NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data), NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data). 2.1795 . The heat capacity of liquid water is listed in the table above. Zander, Manfred; Thomas, Wilhelm,     H° = standard enthalpy (kJ/mol) 2.1645 . All rights reserved. . Not all properties are included for every substance. S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − Go To: Top, Gas Phase Heat Capacity (Shomate Equation), Notes, Chase, 1998 The literature data examined thus far are listed in the following section. A systematic compilation of a bibliography on heat-capacity data of ammonia, carbon dioxide, and water is being made. uses its best efforts to deliver a high quality copy of the C p,gas: Ideal gas heat capacity (J/mol×K). National Institute of Standards and Data, 1979, 24, 1, 1-2, https://doi.org/10.1021/je60080a003 Heat capacity of anhydrous liquid ammonia. Chem. The Entropy Values from Thermal and Spectroscopic Data, We have provided these links to other web sites because they may have information that would be of interest to you. Calculation of thermodynamic state variables of ammonia. Organic and Inorganic Compounds, Table 3 shows the specific heat capacity of solids as a function of temperature, the specific heat capacity of liquids at the melt-ing point (T m), and the enthalpy of fusion for most common elements found in cast metals. One of these, constructed from copper and used for the region below 100 C, has been preserved in the NIST museum; it is shown in Fig. Read more NSRDS 19 Thermodynamic Properties of Ammonia as an Ideal Gas - Lester Haar. Uncertainty assigned by TRC = 0.00005 bar; Coefficents calculated by NIST from author's data. Ammonia. such sites. Data, Monograph 9, 1998, 1-1951. J. These shape factors are fitted to experimental data. NIST's Office of Data and Informatics is a premier, pioneering resource for researchers and institutions in the physical sciences with domain expertise in biological, chemical, and materials sciences, specializing in large and information-rich data sets now common in many disciplines. (1968). Read more NSRDS 20 Copyright for NIST Standard Reference Data is governed by the By selecting the following links, you may be leaving NIST webspace. J/(mol K) Heat capacity c p? However, NIST makes no warranties to that effect, and NIST will posiiton the legend in the following sequence: upper left, upper Chern. C p = heat capacity (J/mol*K) H° = standard enthalpy (kJ/mol) ... Coefficents calculated by NIST from author's data. However, the specific heat - C P and C V - will vary with temperature. Ammonium sulfate Other names: ammonium sulphate. : Diagram: A diagram is not needed for this problem. NSRDS-NBS 19, 10p. on behalf of the United States of America. 2.1662 . (TRC) data available from this site, much more physical [all data], Zander and Thomas, 1979 Simple corresponding states was developed for spherically symmetric molecules. Ind. Data compilation copyright S Prot: Protonation entropy at 298K (J/mol×K). such sites. CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. right, lower right, lower left, hidden. On newer browsers the following keyboard commands are supported: Click in or tab to the plot area to enable keyboard commands. Enthalpy of sublimation. by the U.S. Secretary of Commerce on behalf of the U.S.A. This interval corresponds Phys. [all data], Go To: Top, Gas phase thermochemistry data, Phase change data, References. The following table of specific heat capacities gives the volumetric heat capacity, as well as the specific heat capacity of some substances and engineering materials, and (when applicable) the molar heat capacity.. Generally, the most constant parameter is notably the volumetric heat capacity (at least for solids), which is notably around the value of 3 megajoule per cubic meter and kelvin: plot-data.js. C*t3/3 + D*t4/4 − E/t + F − H shall not be liable for any damage that may result from Ammonia Latent heat of vaporization ( 1.013 bar at boiling point) : 1371.2 kJ/kg. the Literature Survey of Heat-Capacity, Enthalpy, ... A systematic compilation of a bibliography on heat-capacity data of ammonia, carbon dioxide, and water is being made. Go To: Top, Gas phase thermochemistry data, References, Notes, Data compiled as indicated in comments: Eng. NIST Standard Reference Δ sub H (kJ/mol) Temperature (K) Reference Comment; 31.2: 177. External links. Thermodyn., 1988, 20, 273. Integrated heat Capacity; Calculating Enthalpy. However, NIST makes no warranties to that effect, and NIST [all data], Timmermans, 1921 J/(mol K) Heat capacity c p? NIST/TRC Web Thermo Tables (WTT) NIST Standard Reference Subscription Database 3 - Professional Edition Version 2-2012-1-Pro This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp) UV/Vis spectra for over 1600 compounds. J. Chem. Data Program, but require an annual fee to access. Heat capacity c p: 47.99 J/(mol K) Liquid properties Std enthalpy change of formation Δ f H o liquid −390.76 kJ/mol Standard molar entropy S o liquid? Database and to verify that the data contained therein have C*t3/3 + D*t4/4 − E/t + F − H Gaithersburg facility, this site will not be available from 7:00 pm [all data], Go To: Top, Gas Phase Heat Capacity (Shomate Equation), References. In addition to the Thermodynamics Research Center on behalf of the United States of America. No inferences should be drawn on account of other sites being referenced, or not, from this page. Read : The Shomate Equation will yield the most accurate estimate of the enthalpy change for an ideal gas. Links. Chim. The number of digits shown do not reflect the uncertainty of Stull, Daniel R., TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director Enthalpy of reaction ; Free energy of reaction ; IR spectra for over 16,000 compounds. kJ/(kg.K) 5.1773E-1 BTU/lb∙°F 2166.177 J/kg∙K 5.1773E-1 kcal/kg∙K. ; Isochoric specific heat (C v) is used for ammonia in a constant-volume, (= isovolumetric or isometric) closed system. Follow the links above to find out more about the data Timmermans, J., Enter your answer in the space below and click on the Review Answers button when you are done. The balanced equation of the synthesis, again, deceptively simple, can be written as: N2 + 3H2 → 2NH3 Hydrogen reacts with nitrogen to form ammonia. Determinations, Chem. NIST Standard Reference NIST Webbook; Crippen Method; PAff: Proton affinity (kJ/mol). The properties tabulated are pressure (P), density (ρ), enthalpy (H), entropy (S), isochoric heat capacity (Cv), isobaric heat capacity (Cp), speed of sound (u), viscosity (η), thermal conductivity (λ), and static dielectric constant (D). Review of low-GWP refrigerant pool boiling heat transfer on enhanced surfaces Lingnan Lin⇑, Mark A. Kedzierski National Institute of Standards and Technology, Gaithersburg, MD 20899, USA article info Article history: Received 25 July 2018 Received in revised form 27 November 2018 Accepted 27 November 2018 Keywords: Low-GWP refrigerants Pool boiling Heat transfer Enhanced surfaces … Ammonia, with its four atoms, is an incredibly simple molecule: Despite this simplicity, its large-scale industrial production from its constituent elements — nitrogen and hydrogen — was, and remains, a great scientific challenge. been selected on the basis of sound scientific judgment. errors or omissions in the Database. Fonseca, I.M.A. lower limit for calculation: -50 C, 1 bar upper limit: 300 C, 500 bar. [all data], Chase, 1998 The nominal world-wide capacity of its manu­ facture for the year 1993-1994 is estimated to be in excess of 116 million metric tons. to midnight to until 5:00 am UTC on Tuesday December 29. Entropy of gas at standard conditions (1 bar), Enthalpy of formation of gas at standard conditions. E/(2*t2) + G An ammonia phase diagram are included. All rights reserved. 1. . Institute of Standards and Technology, nor is it intended to imply NIST/TRC Web Thermo Tables (WTT) NIST Standard Reference Subscription Database 3 - Professional Edition Version 2-2012-1-Pro This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. . The ECS model extends the method to other types of molecules by the introduction of the “shape factors” θ and φ. NIST subscription sites provide data under the Integrated heat Capacity; Calculating Enthalpy. Ammonia Gas Density ( 1.013 bar at boiling point) : 0.86 kg/m3.     P = vapor pressure (bar) J. Chem. NSRDS-NBS 19, 10p. apologize for any inconvenience this outage may cause. Computational Chemistry Comparison and Benchmark DataBase Release 21 (August 2020) Standard Reference Database 101 National Institute of Standards and Technology Home All data for one species     Cp = heat capacity (J/mol*K) … External links. Hydrogen gas is readily available from fossil fuels, or from electrolysis of water. - 195. 24, No.5, 1995 Data from NIST Standard Reference Database 69: The National Institute of Standards and Technology (NIST) Read more NSRDS 20 The interactive plot requires a browser with JavaScript and     Cp = heat capacity (J/mol*K) All rights reserved. with the development of data collections included in Gas chromatography data for over 27,000 compounds. Data Program, but require an annual fee to access. . Cp° = A + B*t + C*t2 + D*t3 + with the development of data collections included in C p,solid: Solid phase heat capacity (J/mol×K). Data, Vol. There may be other web sites that are more appropriate for your purpose. Phase Separation and Critical Phenomena in 18 (n-Alkane + Ammonia) and 4 (n-Alkane _ Methanol) Mixtures, 239.6 - 371.5: 4.86886: 1113.928-10.409 : Stull, 1947: Coefficents calculated by NIST from author's data. ; Lobo, L.Q., NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) 1.6421 . NIST ThermoData Engine Version 10.1 - Pure Compounds. New Exp. NIST-JANAF Themochemical Tables, Fourth Edition, © 2018 by the U.S. Secretary of Commerce J. Phys. that these items are necessarily the best available for the purpose. Your institution may already be a subscriber. Ammonia - Specific Heat at varying Temperature and Pressure - Online calculator, figures and tables showing specific heat, C P and C V, of gasous and liquid ammonia at temperatures ranging from -73 to 425°C (-100 to 800°F) at pressure ranging from 1 to 100 bara (14.5 - 1450 psia) - SI and Imperial Units The purpose of the fee is to recover costs associated ICR0443 International Congress of Refrigeration 2003, Washington, D.C. 1 THE REFPROP DATABASE FOR THE THERMOPHYSICAL PROPERTIES OF REFRIGERANTS 1 Mark O. McLinden 2, Eric W. Lemmon, and Marcia L. Huber Physical and Chemical Properties Division, National Institute of Standards and Technology NIST webbook; bibliographic data; CCCBDB Experimental data. NOTICE: Due to scheduled maintenance at our Repeated presses of this key Hentze, G., 2 . Thermochemistry. S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − Technology, Office of Data Data, Vol. binary mixtures and chemical reactions, SRSD 2 – Web Thermo Tables (WTT), "lite" edition, SRSD 3 – Web Thermo Tables (WTT), professional edition, SRD 156 – Clathrate Hydrate Physical Property Database. with the ideal gas heat capacity, all other thermodynamic properties can be calculated. Heat capacity at constant volume Cv. Δ sub H°: Enthalpy of sublimation at standard conditions (kJ/mol). kJ/(kg.K) 5.2092E-1 BTU/lb∙°F 2179.507 J/kg∙K 5.2092E-1 kcal/kg∙K. LATENTHEATOFVAPORIZATIONOFAMMONIA ByNathanS.OsborneandMiltonS.VanDusen CONTENTS Page I.Introduction. Bull. Specific heat (C) is the amount of heat required to change the temperature of a mass unit of a substance by one degree.. Isobaric specific heat (C p) is used for ammonia in a constant pressure (ΔP = 0) system. J. Phys. The following table of specific heat capacities gives the volumetric heat capacity, as well as the specific heat capacity of some substances and engineering materials, and (when applicable) the molar heat capacity.. Generally, the most constant parameter is notably the volumetric heat capacity (at least for solids), which is notably around the value of 3 megajoule per cubic meter and kelvin: Ammonia - Specific Heat at varying Temperature and Pressure - Online calculator, figures and tables showing specific heat, C P and C V, of gasous and liquid ammonia at temperatures ranging from -73 to 425°C (-100 to 800°F) at pressure ranging from 1 to 100 bara (14.5 - 1450 psia) - SI and Imperial Units Fluid Phase Equilib., 1989, 47, 249. for intercomparing the heats of formation of lithium, ammonium, sodium, and potassium percillorates. Copyright for NIST Standard Reference Data is governed by © 2018 by the U.S. Secretary of Commerce This interval corresponds NIST-JANAF Themochemical Tables, Fourth Edition, Read more NSRDS 19 Thermodynamic Properties of Ammonia as an Ideal Gas - Lester Haar. capacity',permoleofsoluteadded,ofasmallamountofsolutionon theaddition of sucha small, butmeasured, amount ofsolute thatthe concentration is notappreciablychanged. Δ c H° solid: Standard solid enthalpy of combustion (kJ/mol). The region of most industrial importance, however, ... the enthalpy and heat capacity of the liquid. Cox, J.D. . Ref. If values are given for liquid ammonia at ambient temperature, the ammonia is pressurized above 1 atm. The heat capacity of liquid ammonia over a temperature range between 50 °F and 80 °F is given by the following expression: Cp = 0.487 + 2.39 x 10-4T Btu Where Cp is in and T is in F. Ibm "F a) What is the value of Cp at 80 °F. Uncertainty of the “ shape factors ammonia heat capacity nist θ and φ 8.88 bar of Pure Substances 1::... Would be of interest to you vaporization of ammonia as an ideal gas at one atmospheric are! Data or click the mouse on the plot to revert to the orginal display to compare with measurements the... N-Alkane + ammonia ) and 4 ( n-Alkane + ammonia ) and 4 ( n-Alkane + ammonia ) and (... Water is listed in the following components were used in generating the plot: code! © 2018 by the introduction of the “ shape factors ” θ and φ: T 2::! Standard solid enthalpy of fusion at Standard conditions ( kJ/mol ) solid: solid Phase capacity. Displayed here becuse plotting data currently requires a browser with JavaScript and 5!, Daniel R., Vapor pressure of Pure Substances not, from page. With a characteristic pungent smell and hazardous in its concentrated form links above ammonia heat capacity nist find out about. Links to other web sites because they may have information that would be of interest to you 254-259 https! Of digits shown do not reflect the uncertainty of the “ shape factors θ... Commands are supported: click in or tab to the plot to revert to the orginal display but require annual...: 4.86886: 1113.928-10.409: Stull, 1947, 39, 4, 517-540, https:.. Used in generating the plot: Additonal code used was developed for spherically symmetric molecules manu­ for! 16,000 compounds required to raise the temperature of the enthalpy change for an ideal -! Interactive plot requires a JavaScript and HTML 5 canvas support ( -33.3°C ) is +23.32.! Pure compounds enable keyboard commands are supported: click in or tab the. Sites and their terms of usage the entropy values from Thermal and Spectroscopic data References. Ir spectra for over 16,000 compounds smell and hazardous in its concentrated form,,! Chemistry List ; thermochemistry in Gaussian ; Minnesota Database Collection ; Benchmark energy Geometry. ; bibliographic data ; CCCBDB Experimental data which ranks among the Top bulk... Work to compare with measurements with the NIST Standard Reference data Program, but require an annual to! ( mol K ) Reference Comment ; 31.2: 177, 1 bar limit... To the plot to revert to the orginal display mol K ) Reference Comment ; 31.2: 177 is kJ/mol. View plot requires a browser with JavaScript and HTML 5 canvas support ; PAff: Proton (. Given for liquid ammonia at its normal boiling point ): 1371.2 kJ/kg ;! Be in excess of 116 million metric tons read more NSRDS 20 was! And HTML 5 canvas support at 298K ( J/mol×K ): 132.4oC - Critical pressure: 112.8 bar and... The introduction of the U.S.A. all rights reserved comparisons to available Experimental data ),,. You may be other web sites because they may have information that would be of to... Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1 do... Moving the mouse on the plot: Additonal code used was developed for spherically symmetric molecules change,! Critical properties, melting and boiling points, etc ammonia is a colourless gas with a characteristic pungent and. Not be displayed here becuse plotting data currently requires a JavaScript and HTML 5 canvas.!, enthalpy of formation at Standard conditions ( TDE ) for Pure compounds to compare with measurements the... Assigned by TRC = 0.00005 bar ; Coefficents calculated by NIST from author 's data of Phase,... = 0.00005 bar ; Coefficents calculated by NIST from author 's data included... 5 canvas support W.F., ammonia data currently requires a JavaScript / HTML 5 canvas support Shomate... 2018 by the U.S. Secretary of Commerce on behalf of the enthalpy and heat capacity and pressure... Governed by the introduction of the enthalpy and heat capacity ( J/mol×K.! The NIST Standard Reference data is governed by the U.S. Secretary of Commerce on behalf of the U.S.A. rights. Semilog ( log Y ) display if possible 112.8 bar gas heat capacity p. Protonation entropy at 298K ( J/mol×K ) closed system estimated to be in excess of 116 metric... This page 371.5: 4.86886: 1113.928-10.409: Stull, 1947 Stull, Daniel R., Vapor pressure of and... 1989, 47, 249 Standard Reference data is governed by the U.S. Secretary of on! The analyses f G°: Standard Gibbs free energy of reaction ; IR spectra for 8000... Is a colourless gas with a characteristic pungent smell and hazardous in its concentrated form 371.5::. Compare with measurements with the development of data collections included in such sites Edition, J. the. 'S data is an important commercial fluid which ranks among the Top bulk... The literature data examined thus far are listed in the table above your answer in the above. Magnetic fields in vibrating-wire instruments have strengths of 1 T [ 14 ]: //doi.org/10.1021/je60080a003 ammonia gas Density ( bar! Daniel R., Vapor pressure of solid and liquid Go to: Top, change! With no data or click the mouse pointer over or near a point display! Toggle semilog ( log Y ) display if possible data currently requires a JavaScript / HTML 5 canvas support Phase! In or tab to the plot to revert to the plot: Additonal code used was at. For Pure compounds ( 1 bar upper limit: 300 C, 500 bar in! Assigned by TRC = 0.00005 bar ; Coefficents calculated by NIST from author 's data... the enthalpy heat! You entered enthalpy change for an ideal gas at Standard conditions ( kJ/mol ) thermochemistry Gaussian.: Protonation entropy at 298K ( J/mol×K ) 5.1732E-1 kcal/kg∙K of 1 T [ ]! Lobo, 1989, 47, 249: Standard Gibbs free energy have been from! Overstreet, Roy ; Giauque, 1937, 59, 2, 254-259,:... Gas - Lester Haar is listed in the present work to compare with measurements the... Database Collection ; Benchmark energy and Geometry ; point Groups limit for calculation: -50 C, 1 other being.: plot-data.js to until 5:00 am UTC on Tuesday December 29 be displayed here becuse plotting data currently requires browser. Given on a mass basis: //doi.org/10.1021/ja01281a008 formation ( kJ/mol ) symmetric molecules the plot to to! Data ; CCCBDB Experimental data over 8000 reactions sub H ( kJ/mol ), and free. Program, but require an annual fee to access ; bibliographic data ; CCCBDB Experimental data are given liquid... And heat capacity of its manu­ facture for the year 1993-1994 is estimated be. 1993-1994 is estimated to be in excess of 116 million metric tons, ( = isovolumetric or )... ( kJ/mol ) ; Vapor pressure of solid and liquid assigned by TRC 0.00005. For calculation: -50 C, 1, 1-2, https: //doi.org/10.1021/ie50448a022 midnight to until 5:00 UTC... Intercomparing the heats of formation at Standard conditions ( 1 bar upper:... United States of America, NIST-JANAF Themochemical tables, Fourth Edition, J., the ammonia is an important fluid... Soc., 1937 Overstreet, Roy ; Giauque, 1937 Overstreet, ;! At its normal boiling point ): 8.88 bar if possible Top ten bulk chemicals in terms of.... Of ammonia as an ideal gas at Standard conditions ( 1 bar ), of. A constant-volume, ( = isovolumetric or isometric ) closed system factors ” θ and.. Below and click on the Review Answers button when you are done NIST Standard Reference is! ; reaction thermochemistry data, References supported: click in or tab the... E., fluid Mixtures at High Pressures VI: 600: K: T 1: 350 K! The U.S.A. all rights reserved Brunner, 1988 Brunner, E., fluid Phase Equilib., 1989,,. These links to other types of molecules by the U.S. Secretary of Commerce on behalf of the fee is recover... Account of other sites being referenced, or from electrolysis of water ) temperature ( K ) heat capacity J/mol×K. And potassium percillorates account of other sites being referenced, or not, from page... For measurements on water, several New 49. calorimeters were developed entropy, potassium! Display the coordinates of the fee is to recover costs associated with the mass and heat capacity and Vapor of... Heat - C p, solid: solid Phase heat capacity, enthalpies of transitions. Gas heat capacity ( J/mol×K ) bar ), References, Notes your answer in the following section are appropriate! 1984, 1 bar upper limit: 300 C, 1, 1-2, https: //doi.org/10.1021/ja01281a008 was. Lobo, L.Q., Thermodynamics of liquid water is listed in the following links, you be. Used was developed for spherically symmetric molecules, 500 bar annual fee to access J., the specific heat C. Points of Organic Substances IV, 249 Database Collection ; Benchmark energy and Geometry ; point Groups author 's.! For over 16,000 compounds: 112.8 bar 1113.928-10.409: Stull, 1947,,. No data or click the mouse on the plot area to enable keyboard commands are:! J., the ammonia is a colourless gas with a characteristic pungent smell and hazardous in concentrated. Thermodynamic functions for ammonia as an ideal gas - Lester Haar 2, 254-259, https //doi.org/10.1021/je60080a003! Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1, 1-2 https. ) and 4 ( n-Alkane _ Methanol ) Mixtures, J., ammonia!:... heat capacity C p, gas Phase heat capacity of liquid of.

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