Calculate ?sordmf for oxalic acid and ?sordm for the, Ask an Expert

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The enthalpy of combustion, ?Hºcombustion, of oxalic acid, H2C2O4(s), is -246.05 kJ mol-1. Consider the following data: Substance ?Hºf (kJ mol-1) Sº (J mol-1 K-1) C (s) 0 5.69 CO2 (g) -393.5 213.6 H2 (g) 0 130.6 H2O (l) -285.8 69.96 O2 (g) 0 205.0 H2C2O4 (s) ? 120.1 (1) 2H2C2O4 + O2 -> 2H2O + 4CO2 (2) H2 + 2C + 2O2 -> H2C2)4 a) Use the information in the table above and the equations (1) and (2) to calculate ?Hºf for oxalic acid. b) Calculate ?Sºf for oxalic acid and ?Sº for the combustion of one mole of oxalic acid. c) Calculate ?Gºf for oxalic acid and ?Gº for the combustion of one mole of oxalic acid.

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Category:- Chemistry
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