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For Cr(2)O(7)^(2-)+14H^(+)+6e rarr 2Cr^(...

For `Cr_(2)O_(7)^(2-)+14H^(+)+6e rarr 2Cr^(3+)+7H_(2)O`, what is the quantity of electricity in coulomb needed to reduce 1 mol of `Cr_(2)O_(7)^(2-)` ?

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To reduce 1 mol of `Cr_(2)O_(7)^(2-)`, 6 mol of electrons are required. So, the quantity of electricity needed `=6xx96500C=5.79xx10^(5)C`
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