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MHT CET Chemistry question

ChemistryElectrochemistryMHT CET

The Gibb's energy for the decomposition of at 500℃ is as follows: , kJ . The potential difference needed for electrolytic reduction of at 500℃ is at least

Answer: (D)

Solution

For the reaction as written 4 electrons are transferred - → O2 + , so E = ΔG/(nF) = 966000/(4 × 96500) = 2.5 V;

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Question ID VK-066785