1. Given the standard free energy of formation values below, calculate the free energy change for this reaction:

?Gf°(H2O2) = -120.4 kJ/mol
?Gf°(H2O) = -237.1 kJ/mol

2. Given the enthalpy change and entropy change values shown below, calculate the free energy change for this reaction at 25°C using the Gibbs free energy equation, ?G = ?H - T?S:

?H°= -196.0 kJ
?S° = 125.7 J/K

3.
Given the enthalpy change and entropy change values below, calculate the free energy change for this reaction at -20°C using the Gibbs free energy equation, ?G = ?H - T?S:

?H°= -196.0 kJ
?S° = 125.7 J/K

Thanks so much!

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