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Consider the reaction : Cr2O 2- 7 +14H++6e-→2Cr3++7H2O What is the quantity of electricity in coulombs needed to reduce 1mole of Cr2O 2- 7 ? Select the correct answer from above options

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Correct Answer - 579000C Form the given reactions, 1molofCr2O 2- 7 ions require 6F=6×96500C=57900C of electricity for reduction to Cr3+ .

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