![]() ![]() Interpretation of the properties of solid, The heats of combustion of methane and carbon monoxide, Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. Heats of combustion and formation of the paraffin hydrocarbons at 25° C,ĭie verbrennungs- und bildungswarme von kohlenoxyd und methan,Īrch. Part 8.-Methane, ethane, propane, n-butane and 2-methylpropane, Measurements of heats of combustion by flame calorimetry. Thermodynamic Properties of Individual Substances, 4th edition, Volume 2, Gurvich, L.V. ![]() Įvaluated Enthalpies of Formation of the Stable Closed Shell C1 and C2 Chlorinated Hydrocarbons, NIST-JANAF Themochemical Tables, Fourth Edition, Go To: Top, Gas phase thermochemistry data, Notes Requires a JavaScript / HTML 5 canvas capable browser. Gas Phase Heat Capacity (Shomate Equation) Because of more precise method of calculation, the recommended values are more accurate, especially at high temperatures, than those obtained by and often regarded as reference data. GTĬonstant pressure heat capacity of gas C p,gas (J/mol*K) The value of S(298.15 K)=185.94 J/mol*K was obtained by high accuracy ab initio calculation. Earlier the value of 185.3 J/mol*K was calculated from experimental data. The calorimetric value is significantly higher than the statistically calculated entropy, 186.26 J/mol*K, which remains the best value for use in thermodynamic calculations. Reanalyzed by Cox and Pilcher, 1970, Original value = -887.3 ± 1.0 kJ/mol Corresponding Δ fHº gas = -73.39 kJ/mol (simple calculation by NIST no Washburn corrections) ALSĬorresponding Δ fHº gas = -75.010 kJ/mol (simple calculation by NIST no Washburn corrections) ALS Hf derived from Heat of Hydrogenation Corresponding Δ fHº gas = -74.822 kJ/mol (simple calculation by NIST no Washburn corrections) ALS Reanalyzed by Cox and Pilcher, 1970, Original value = -75.19 kJ/mol ALSĬorresponding Δ fHº gas = -74.48 kJ/mol (simple calculation by NIST no Washburn corrections) ALS Hf derived from Heat of Hydrogenation ALS GT - Glushko Thermocenter, Russian Academy of Sciences, MoscowĪdopted recommendation of Gurvich, Veyts, et al., 1991 DRB Secretary of Commerce on behalf of the U.S.A.ĪLS - Hussein Y. Your institution may already be a subscriber.įollow the links above to find out more about the dataīy the U.S. With the development of data collections included in The purpose of the fee is to recover costs associated NIST subscription sites provide data under theĭata Program, but require an annual fee to access. NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data).NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data).Computational Chemistry Comparison and Benchmark Database.Electron-Impact Ionization Cross Sections (on physics web site).Microwave spectra (on physics lab web site).Vibrational and/or electronic energy levels.Use this link for bookmarking this species This structure is also available as a 2d Mol file IUPAC Standard InChIKey: VNWKTOKETHGBQD-UHFFFAOYSA-N Copy. ![]()
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