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Decomposition of H₂O₂ is accompanied by:

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no change in free energy

increase in free energy

decrease in free energy

evolution of heat

answer is A.

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Detailed Solution

H₂O₂(l) → H₂O(l) + 21O₂(g): Δ_rG_o=−122. 6 kJ/mol.

As the reaction from left to right is accompanied by a decrease in free energy, it is a spontaneous process. However, its decomposition at 25^oC in the absence of catalysts is slow.

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