Chromium can be electroplated from aqueous potassium dichromate, with the reduction shown below. If a current of 6.0A and a voltage of 4.5V are used:  Cr2O7+(aq) + 14H+(aq) + 12e- -> 2Cr(s) +7H2O a) How many hours would it take to completely convert 215mL of 1.25M K2Cr2O7 to elemental chromium? b) How many kilowatt-hours of electrical energy are required to plate 1.00 g of chromium?

Question

Chromium can be electroplated from aqueous potassium dichromate, with the reduction shown below. If a current of 6.0A and a voltage of 4.5V are used:  Cr2O7+(aq) + 14H+(aq) + 12e- -> 2Cr(s) +7H2O


a) How many hours would it take to completely convert 215mL of 1.25M K2Cr2O7 to elemental chromium?

b) How many kilowatt-hours of electrical energy are required to plate 1.00 g of chromium?

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