The standard enthalpy and standard entropy of decomposition of N2O4 to NO2 are 55.0 kJ mol–1 and 175.0 J/K/mol respectively. The standard free energy change for this reaction at 25ºC in J mol–1 is____

Question

The standard enthalpy and standard entropy of decomposition of N2O4 to NO2 are 55.0 kJ mol–1 and 175.0 J/K/mol respectively. The standard free energy change for this reaction at 25ºC in J mol–1 is____ (Nearest integer)

Prashant Kotian · Accepted Answer

Correct answer: .. Hº = Hº – TSº = 55 kJ/mol – 298 kx mol – k kJ = 55 – 52.15 = 2.85 kJ/mol = 2850 J/mol

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