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Thermodynamics : Heats of Formation

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For the reaction CH4 (g) + N2 (g) + 164 kJ 6 HCN(g) + NH3 (g) at 25degrees C and 1 atm of pressure
ÄGo = 159 kJ. Calculate ÄSo at 25degrees C.

ÄHfo for CH4 (g) = -74.77 kJ/mol and ÄHfo for
NH3 (g) = -46.09 kJ/mol. What is ÄHfo for HCN(g) ?

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Solution Preview

For the reaction CH4 (g) + N2 (g) + 164 kJ 6 HCN(g) + NH3 (g) at 25degrees C and 1 atm of pressure
ÄGo = 159 kJ. Calculate ÄSo at 25degrees C.

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Solution Summary

This solution explains how to calculate entropy based on Gibbs free energy and enthalpy of formation. This solution also explains how to calculate the heat of formation of a compound using the heat of reaction.

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