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By convention, the (higher) heat of combustion is defined to be the heat released for the complete combustion of a compound in its standard state to form stable products in their standard states: hydrogen is converted to water (in its liquid state), carbon is converted to carbon dioxide gas, and nitrogen is converted to nitrogen gas.
Molar enthalpy of zinc above 298.15 K and at 1 atm pressure, showing discontinuities at the melting and boiling points. The Δ H °m of zinc is 7323 J/mol, and the Δ H °v is 115 330 J/mol. Enthalpy change for a chemical reaction
Std enthalpy change of formation, Δ f H o liquid? kJ/mol Standard molar entropy, S o liquid: 117.8 J/(mol K) Heat capacity, c p: 67.4 J/(mol K) Gas properties Std enthalpy change of formation, Δ f H o gas +52.47 kJ/mol Standard molar entropy, S o gas: 219.32 J/(mol K) Enthalpy of combustion, Δ c H o –1387.4 kJ/mol Heat capacity, c p: 42.9 ...
Standard enthalpy of combustion is the enthalpy change when one mole of an organic compound reacts with molecular oxygen (O 2) to form carbon dioxide and liquid water. For example, the standard enthalpy of combustion of ethane gas refers to the reaction C 2 H 6 (g) + (7/2) O 2 (g) → 2 CO 2 (g) + 3 H 2 O (l).
Std enthalpy change of fusion, Δ fus H o +4.9 kJ/mol Std entropy change of fusion, Δ fus S o +31 J/(mol·K) Std enthalpy change of vaporization, Δ vap H o +42.3 ± 0.4 kJ/mol [4] Std entropy change of vaporization, Δ vap S o: 109.67 J/(mol·K) Molal freezing point constant: −1.99 °C kg/mol Solid properties Std enthalpy change of ...
Std enthalpy change of formation, Δ f H o liquid –198.7 kJ/mol Standard molar entropy, S o liquid: 295 J/(mol K) Enthalpy of combustion, Δ c H o –4163 kJ/mol Heat capacity, c p: 197.66 J/(mol K) Gas properties Std enthalpy change of formation, Δ f H o gas –167.2 kJ/mol Standard molar entropy, S o gas: 388.82 J/(mol K) Heat capacity, c ...
J.A. Dean (ed.), Lange's Handbook of Chemistry (15th Edition), McGraw-Hill, 1999; Section 6, Thermodynamic Properties; Table 6.4, Heats of Fusion, Vaporization, and Sublimation and Specific Heat at Various Temperatures of the Elements and Inorganic Compounds
Std enthalpy change of formation, Δ f H o liquid-147.6 kJ/mol Standard molar entropy, S o liquid: 229.7 J/(mol K) Heat capacity, c p: 132.42 J/(mol K) –262 °C to –3 °C Gas properties Std enthalpy change of formation, Δ f H o gas –124.7 kJ/mol Standard molar entropy, S o gas: 310.23 J/(mol K) Enthalpy of combustion, Δ c H o –2877.5 ...