Chemistry

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Hydrogen peroxide is used as a bleachin agent, a disinfectant and medicinally as a topical antibacterial agent. Hydrogen peroxide decomposes according to the reacton
2H^2O^2(l)-->2H^2O(l)+o^2(g)

A. Given the standard free energy of formation values shown below, calculate the free energy change for this reaction.
Gf(H^2O^2)=-120.4kJ/mol
Gf(H^2O)=-237.1kJ/mol

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