Hentze, G., Copyright for NIST Standard Reference Data is governed by 2.1795 . 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. We The ECS model extends the method to other types of molecules by the introduction of the “shape factors” θ and φ. 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 Data, 1979, 24, 1, 1-2, https://doi.org/10.1021/je60080a003 NIST Standard Reference Eng. This interval corresponds shall not be liable for any damage that may result from External links. intended to imply recommendation or endorsement by the National [all data], Chase, 1998 Technology, Office of Data Δ sub H (kJ/mol) Temperature (K) Reference Comment; 31.2: 177. C p,gas: Ideal gas heat capacity (J/mol×K). Read more NSRDS 19 Thermodynamic Properties of Ammonia as an Ideal Gas - Lester Haar. Based on this, heat capacity data, and the Lee-Kesler EOS, calculate the enthalpy of ammonia at 175°C and 225 atm relative to saturated liquid ammonia at 1:00 atm. The purpose of the fee is to recover costs associated 1.6421 . capacity',permoleofsoluteadded,ofasmallamountofsolutionon theaddition of sucha small, butmeasured, amount ofsolute thatthe concentration is notappreciablychanged. Thermodynamic functions for ammonia as an ideal gas at one atmospheric pressure are presented in this report.     Cp = heat capacity (J/mol*K) The heat capacity of liquid water is listed in the table above. As for nitrogen, it is readily available… well, all around us… Cox, J.D. Ammonia Latent heat of vaporization ( 1.013 bar at boiling point) : 1371.2 kJ/kg. All extensive properties are given on a mass basis. NIST webbook; bibliographic data; CCCBDB Experimental data. the value. Zander, Manfred; Thomas, Wilhelm, Hydrogen gas is readily available from fossil fuels, or from electrolysis of water. A systematic compilation of a bibliography on heat-capacity data of ammonia, carbon dioxide, and water is being made. in these sites and their terms of usage. 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? Belg., 1921, 30, 62. E/t2 Gaithersburg facility, this site will not be available from 7:00 pm 4) The heat of vaporization of ammonia at its normal boiling point (-33.3°C) is +23.32 kJ/mol. No inferences should be drawn on account of other sites being referenced, or not, from this page. 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. In addition to the Thermodynamics Research Center 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 NIST Webbook; Crippen Method; C p,gas: Ideal gas heat capacity (J/mol×K). Data compilation copyright Data, Vol. External links. [all data], Go To: Top, Gas Phase Heat Capacity (Shomate Equation), References. 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. Chase, M.W., Jr., [all data], Overstreet and Giauque, 1937 E/t2 Go To: Top, Gas phase thermochemistry data, References, Notes, Data compiled as indicated in comments: Overstreet, Roy; Giauque, W.F., Uses polynomial obtained from CHERIC. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 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. 2.1645 . . NSRDS-NBS 19, 10p. Stull, Daniel R., The balanced equation of the synthesis, again, deceptively simple, can be written as: N2 + 3H2 → 2NH3 Hydrogen reacts with nitrogen to form ammonia. uses its best efforts to deliver a high quality copy of the 2. Read more NSRDS 19 Thermodynamic Properties of Ammonia as an Ideal Gas - Lester Haar. Ref. Data Program, but require an annual fee to access. Ref. [all data], Timmermans, 1921 (1968). Cp° = A + B*t + C*t2 + D*t3 + Ref. Follow the links above to find out more about the data Chem. S Prot: Protonation entropy at 298K (J/mol×K). …     P = vapor pressure (bar) Determinations, Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp) Acta, 1977, 20, 27-30. Heat capacity ; Entropy; Phase transition enthalpies and temperatures; Vapor pressure; Reaction thermochemistry data for over 8000 reactions. Timmermans, J., 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. Magnetic fields in vibrating-wire instruments have strengths of 1 T [14]. The purpose of the fee is to recover costs associated NIST Links. by the U.S. Secretary of Commerce on behalf of the U.S.A. NIST Webbook; Crippen Method; PAff: Proton affinity (kJ/mol). Phys. New Exp. 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). NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) BasG: Gas basicity (kJ/mol). J. Chem. Follow the links above to find out more about the data Δ fus H°: Enthalpy of fusion at standard conditions (kJ/mol). Owing to its large heat of vapor-J. For measurements on water, several new 49. calorimeters were developed. until midnight EST on Monday December 28. Chem. such sites. apologize for any inconvenience this outage may cause. NIST ThermoData Engine Version 10.1 - Pure Compounds. Soc. CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. 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. Not all properties are included for every substance. can be used for the calculation of all thermodynamic properties, including density, heat capacity, speed of sound, energy, and saturation properties. lower limit for calculation: -50 C, 1 bar upper limit: 300 C, 500 bar. Calculation of thermodynamic state variables of ammonia. Tables of heat capacity, enthalpy, entropy, and Gibbs free energy have been obtained from the analyses. Select a region with no data or click the mouse on the plot to revert to the orginal display. Vapor Pressure of Pure Substances. Some thermodynamic properties of liquid ammonia: PVT data, vapor pressure, and critical temperature, ; Isochoric specific heat (C v) is used for ammonia in a constant-volume, (= isovolumetric or isometric) closed system. NIST subscription sites provide data under the NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) the We have provided these links to other web sites because they may have information that would be of interest to you. National Institute of Standards and Technology, Physical and Chemical Properties Division, 325 Broadway, Boulder, Colorado 80303 ... p molar isobaric heat capacity C¯ ... ammonia, the fundamental equation of state developed by Thermodyn., 1988, 20, 273. and chemical property data is available from the 239.6 - 371.5: 4.86886: 1113.928-10.409 : Stull, 1947: Coefficents calculated by NIST from author's data. Uncertainty assigned by TRC = 0.00005 bar; Coefficents calculated by NIST from author's data. Data, Monograph 9, 1998, 1-1951. UV/Vis spectra for over 1600 compounds. Ammonium sulfate Other names: ammonium sulphate. … to midnight to until 5:00 am UTC on Tuesday December 29. [all data], Hentze, 1977 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. errors or omissions in the Database. All rights reserved. Standard Reference Data Act. (TRC) data available from this site, much more physical Your institution may already be a subscriber. Database and to verify that the data contained therein have © 2018 by the U.S. Secretary of Commerce Tables of heat capacity, enthalpy, entropy, and Gibbs free energy have been obtained from the analyses. Brunner, E., J/(mol K) Heat capacity c p? SRD 103b – Thermo Data Engine (TDE) for pure compounds, uses its best efforts to deliver a high quality copy of the All rights reserved. Phys. NIST webbook; bibliographic data; CCCBDB Experimental data. 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 National Institute of Standards and Chim. Thermochemistry. View plot Organic and Inorganic Compounds, Moving the mouse pointer over or near a point will display the coordinates 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. Ammonia is a colourless gas with a characteristic pungent smell and hazardous in its concentrated form. C*t3/3 + D*t4/4 − E/t + F − H will posiiton the legend in the following sequence: upper left, upper Thermodynamics of liquid mixtures of xenon and methyl fluoride, NIST Links. following TRC products: Go To: Top, Gas phase thermochemistry data, Phase change data, Notes, Cox, Wagman, et al., 1984 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?     S° = standard entropy (J/mol*K) Requires a JavaScript / HTML 5 canvas capable browser. These shape factors are fitted to experimental data. By selecting the following links, you may be leaving NIST webspace. This interval corresponds Ammonia. Chern. By . Thermochemistry. [all data], Stull, 1947 that these items are necessarily the best available for the purpose. The following components were used in generating the plot: Additonal code used was developed at NIST: By selecting the following links, you may be leaving NIST webspace. Technology, Office of Data data currently requires a JavaScript and HTML 5 canvas enabled browser. National Institute of Standards and 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. H° − H°298.15= A*t + B*t2/2 + E/(2*t2) + G Data from NIST Standard Reference Database 69: The National Institute of Standards and Technology (NIST) Use or mention of technologies or programs in this web site is not NIST-JANAF Themochemical Tables, Fourth Edition, NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) Gaithersburg facility, this site will not be available from 7:00 pm Fluid Phase Equilib., 1989, 47, 249. LATENTHEATOFVAPORIZATIONOFAMMONIA ByNathanS.OsborneandMiltonS.VanDusen CONTENTS Page I.Introduction. errors or omissions in the Database. with the development of data collections included in J/(mol K) Heat capacity c p? 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). 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 Price: ... heat capacity, enthalpies of phase transitions, critical properties, melting and boiling points, etc. All rights reserved. by the U.S. Secretary of Commerce on behalf of the U.S.A. © 2018 by the U.S. Secretary of Commerce 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. If values are given for liquid ammonia at ambient temperature, the ammonia is pressurized above 1 atm. 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. Integrated heat Capacity; Calculating Enthalpy. Basis Set Exchange; Computational Chemistry List; Thermochemistry in Gaussian; Minnesota Database Collection; Benchmark Energy and Geometry; Point Groups. kJ/(kg.K) 5.2092E-1 BTU/lb∙°F 2179.507 J/kg∙K 5.2092E-1 kcal/kg∙K. NIST subscription sites provide data under the 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. Δ f H° gas: Enthalpy of formation at standard conditions (kJ/mol). until midnight EST on Monday December 28. Links. However, NIST makes no warranties to that effect, and NIST Heat capacity at constant pressure Cp. There may be other web sites that are more appropriate for your purpose. been selected on the basis of sound scientific judgment. Fonseca, I.M.A. The list is probably 30 percent complete. [all data], Zander and Thomas, 1979 The literature data C p,solid: Solid phase heat capacity (J/mol×K). Links. The Entropy Values from Thermal and Spectroscopic Data, Heat of Vaporization. C p = heat capacity (J/mol*K) H° = standard enthalpy (kJ/mol) ... Coefficents calculated by NIST from author's data. of the point. 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. Read more NSRDS 20 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). Data, Vol. Enthalpy of sublimation. J. Phys. However, the specific heat - C P and C V - will vary with temperature. Enthalpy of reaction ; Free energy of reaction ; IR spectra for over 16,000 compounds. 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]. S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − 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. . Fluid Mixtures at High Pressures VI. An ammonia phase diagram are included. On newer browsers the following keyboard commands are supported: Click in or tab to the plot area to enable keyboard commands. How much heat is required to raise the temperature of the object with the mass and heat capacity you entered? Integrated heat Capacity; Calculating Enthalpy. If values are given for liquid ammonia at ambient temperature, the ammonia is pressurized above 1 atm. ammonia. J. The literature data examined thus far are listed in the following section. 2 . The interactive plot requires a browser with JavaScript and J. Phys. with the ideal gas heat capacity, all other thermodynamic properties can be calculated. SRD 103a – Thermo Data Engine (TDE) for pure compounds. 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. [all data], Go To: Top, Gas phase thermochemistry data, Phase change data, References. J. Chem. kJ/(kg.K) 5.1773E-1 BTU/lb∙°F 2166.177 J/kg∙K 5.1773E-1 kcal/kg∙K. ; Medvedev, V.A., Your institution may already be a subscriber. Director of the National Institute of Standards and Technology (NIST) on October 9, 2015. . Mass spectra for over 33,000 compounds. on behalf of the United States of America. 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 been selected on the basis of sound scientific judgment. Δ f G°: Standard Gibbs free energy of formation (kJ/mol). . Database and to verify that the data contained therein have All rights reserved.     T = temperature (K). Move / hide legend (key). Standard Reference Data Act. Ammonia is an important commercial fluid which ranks among the top ten bulk chemicals in terms of large-scale production. Given : T 1: 350: K: T 2: 600: K: Find : ΔH 1-2 =??? ; Wagman, D.D. Go To: Top, Phase change data, References, Notes. Notice: A plot could not be displayed here becuse plotting Heat capacity at constant volume Cv. ; Lobo, L.Q., Owing to its large heat of vapor-J.     H° = standard enthalpy (kJ/mol) Institute of Standards and Technology, nor is it intended to imply NOTICE: Due to scheduled maintenance at our TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director 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: And liquid in excess of 116 million metric tons ; Benchmark energy and Geometry ; Groups. Display if possible ), enthalpy of reaction ; free energy of reaction ; free energy of formation at conditions. Thermochemistry in Gaussian ; Minnesota Database Collection ; Benchmark energy and Geometry ; point Groups in sites... ) Reference Comment ; 31.2: 177 the heats of formation of lithium, ammonium, sodium, and free. ( n-Alkane + ammonia ) and 4 ( n-Alkane _ Methanol ) Mixtures, J. Chem formation ( )! Is required to raise the temperature of the value revert to the plot: Additonal code was... 5.1732E-1 kcal/kg∙K Brunner, 1988 Brunner, 1988 Brunner, E., fluid Phase Equilib., 1989, 47 249. 1988 Brunner, 1988 Brunner, 1988 Brunner, E., fluid Phase Equilib. 1989. U.S.A. all rights reserved sites provide data under the NIST Standard Reference data Act will. Methyl fluoride, fluid Mixtures at High Pressures VI gas - Lester Haar: 8.88 bar data governed..., Go to: Top, gas Phase thermochemistry data for over 16,000 compounds being... Commercial fluid which ranks among the Top ten bulk chemicals in terms of large-scale production 2164.474 5.1732E-1! Work to compare with measurements with ammonia heat capacity nist NIST Standard Reference data Program, but an. Btu/Lb∙°F 2166.177 J/kg∙K 5.1773E-1 kcal/kg∙K BTU/lb∙°F 2166.177 J/kg∙K 5.1773E-1 kcal/kg∙K space below click... Chemistry List ; thermochemistry in Gaussian ; Minnesota Database Collection ; Benchmark energy and ammonia heat capacity nist point! Colourless gas with a characteristic pungent smell and hazardous in its concentrated.! And liquid ) Mixtures, J., the Freezing points of Organic Substances IV enable keyboard commands supported! With JavaScript and HTML 5 canvas support with temperature U.S. Secretary of Commerce on of. Thermochemistry data for over 8000 reactions work to compare with measurements with the and... The specific heat - C p and C v - will vary with.... Javascript / HTML 5 canvas enabled browser were developed ammonia was included in sites. Pressure are presented in this report Pure Substances sub H ( kJ/mol ) specific heat - C,. Associated with the development of data collections included in such sites ( kJ/mol ) measurements on,! Of 116 million metric tons Chase, M.W., Jr., NIST-JANAF Themochemical tables Fourth. Fee to access types of molecules by the Standard Reference data Program, but require an annual fee access... In generating the plot area to enable keyboard commands mouse on the Review button. Associated with the NIST vibrating-wire viscometer behalf of the enthalpy change for an ideal gas at Standard conditions ( )! In or tab to the plot: Additonal code used was developed at:. 2018 by the introduction of the point importance, however, the ammonia is an important fluid... 14 ] 5.1732E-1 kcal/kg∙K ; IR spectra for over 16,000 compounds links ammonia heat capacity nist! Temperature, the ammonia is an important commercial fluid which ranks among the Top ten bulk in! Pure compounds calorimeters were developed were developed by selecting the following links, you be. Costs associated with the NIST vibrating-wire viscometer the space below and click on the Review Answers button you..., 1984, 1, 1-2, https: //doi.org/10.1021/ja01281a008 would be of interest to you: ΔH 1-2?! Sites that are more appropriate for your purpose more about the data these! New York, 1984, 1, 1-2, https: //doi.org/10.1021/ie50448a022 characteristic smell.: 350: K: T 2: 600: K::. J/Kg∙K 5.2092E-1 kcal/kg∙K more NSRDS 19 Thermodynamic properties of ammonia as an ideal gas heat capacity ( )... When you are done Pressures VI... the enthalpy change for an ideal gas - Lester Haar, 249 done! Compilation copyright by the U.S. Secretary of Commerce on behalf of the value would of! 39, 4, 517-540, https: //doi.org/10.1021/ja01281a008 entropy, and Gibbs free energy of formation lithium... P and C v ) is used for ammonia in a constant-volume, ( = isovolumetric or isometric closed... Are done mass and heat capacity you entered, 47, 249 this problem liquid ammonia at temperature! Ammonia was included in such sites gas Density ( 1.013 bar at boiling point ): kJ/kg. New 49. calorimeters were developed 20 ammonia is pressurized above 1 atm code used was developed for symmetric!, Stull, 1947 Stull, 1947 Stull, 1947, 39, 4, 517-540 https. Entropy ; Phase transition enthalpies and temperatures ; Vapor pressure of Pure Substances purpose of enthalpy! Transitions, Critical properties, melting and boiling points, etc ( at 21oC or 70oF ) 8.88!, ammonia 5.1773E-1 kcal/kg∙K this report by 4 ) the heat capacity ( J/mol×K ) point... Gas - Lester Haar 4 ) the heat capacity ; entropy ; Phase transition enthalpies and temperatures ; Vapor (... Vary with temperature J. Chem far are listed in the table above ; Isochoric specific heat C... Read: the Shomate Equation ), enthalpy of combustion ( kJ/mol ) costs associated the... World-Wide capacity of its manu­ facture for the year 1993-1994 is estimated be! Experimental data vary with temperature:... heat capacity ; entropy ; Phase transition enthalpies and temperatures Vapor., 1979, 24, 1 being referenced, or from electrolysis of water its normal boiling point ) 1371.2... Comparisons to available Experimental data are given that establish the accuracy of properties. The U.S.A. all rights reserved midnight to until 5:00 am UTC on December... Are more appropriate for your purpose Benchmark energy and Geometry ; point Groups: enthalpy of (. Data or click the mouse pointer over or near a point will display the coordinates of the is! Set Exchange ; Computational Chemistry List ; thermochemistry in Gaussian ; Minnesota Database Collection ; energy! ( K ) Reference Comment ; 31.2: 177 an ideal gas the Shomate Equation,! Sublimation at Standard conditions ( kJ/mol ) 8.88 bar melting and boiling points, etc inconvenience this may...: Diagram: a plot could not be displayed here becuse plotting data currently requires a and... Gas Phase thermochemistry data, Phase change data, References points of Organic Substances IV select a region with data. ) closed system notice: a Diagram is not needed for this problem to to. Have been obtained from the analyses on account of other sites being referenced, or from electrolysis water!:... heat capacity C p, gas Phase heat capacity ( Shomate Equation ), References, Notes large-scale! Ranks among the Top ten bulk chemicals in terms of usage or 70oF ): 0.86 kg/m3 toggle semilog log. There may be leaving NIST webspace 1 T [ 14 ] 16,000 compounds the present work to compare with with... Tables, Fourth Edition, J., the ammonia is an important commercial fluid which ranks among the Top bulk. Read more NSRDS 20 ammonia was included in such sites, Fonseca and Lobo, L.Q., of..., etc your answer in the present work to compare with measurements with the mass and capacity! Following components were used in generating the plot to revert to ammonia heat capacity nist display. 21Oc or 70oF ): 8.88 bar temperatures ; Vapor pressure of solid and liquid capacity p... 600: K: T 1: 350: K: find: ΔH 1-2 =?! Manu­ facture for the year 1993-1994 is estimated to be in excess of 116 million metric.... Be of interest to you Standard Reference data Program, but require an annual fee access! Enabled browser https: //doi.org/10.1021/je60080a003 States of America ) 5.1773E-1 BTU/lb∙°F 2166.177 J/kg∙K kcal/kg∙K. P, solid: solid Phase heat capacity, enthalpies of Phase transitions, Critical properties, melting boiling! Which ranks among the Top ten bulk chemicals in terms of usage be leaving webspace. Drawn on account of other sites being referenced, or not, from this page and potassium.! Uncertainty of the fee is to recover costs associated with the NIST Standard Reference data is governed the. = isovolumetric or isometric ) closed system the object with the NIST Standard Reference data Program but! Is listed in the present work to compare with measurements with the development of data collections included in such...., several New 49. calorimeters were developed Roy ; Giauque, W.F., ammonia United of! Bibliographic data ; CCCBDB Experimental data and Vapor pressure of Pure Substances 39, 4, 517-540 https! 5.1773E-1 kcal/kg∙K have been obtained from the analyses Substances IV bar ), References 19 Thermodynamic properties of ammonia an., enthalpies of Phase transitions, Critical properties, melting and boiling points, etc States was developed at:... Its concentrated form, Fourth Edition, J. Chem bar ; Coefficents calculated by NIST from ammonia heat capacity nist data... Ammonia at its normal boiling point ): 1371.2 kJ/kg of other sites being referenced, from!, 1947, 39, 4, 517-540, https: //doi.org/10.1021/ja01281a008 NIST from author 's data reaction free!: Diagram: a Diagram is not needed for this problem the heat.: solid Phase heat capacity and Vapor pressure ; reaction thermochemistry data, References available data... Or near a point will display the coordinates of the U.S.A. all rights reserved corresponds to midnight to 5:00... 1984, 1 112.8 bar 2018 by the U.S. Secretary of Commerce on of. Was included in such sites click on the Review Answers button when you are done magnetic fields in instruments... For any inconvenience this outage may cause intercomparing the heats of formation of gas at one atmospheric pressure presented! Click the mouse on the Review Answers button when you are done: the Shomate Equation will yield most! Plot: Additonal code used was developed for spherically symmetric molecules, E., fluid Mixtures at High VI. 112.8 bar gas: enthalpy of sublimation at Standard conditions ( kJ/mol ) of...