6) Chromium can be electroplated from aqueous potassium dichromate, with thereduction shown below. If a current of 6.0A and a voltage of 4.5V are used:Cr20,* (ag) + 14H* (aq)+ 12e¯ → 2Crcs) + 7H20a) How many hours would it take to completely convert215mL of 1.25M K2C12O7 to elemental chromium?b) How many kilowatt-hours of electrical energy arerequired to plate 1.00 g of chromium?

The reaction considered is, Cr2O7+ (aq) + 14H+ (aq) + 12 e-→12 Cr (s) + 7 H2O

6) 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: Cr207" (aq) + 14H* (aq)+ 12e¯ → 2Cr(s) + 7H20 a) How many hours would it take to completely convert 215mL of 1.25M K2C12O7 to elemental chromium? b) How many kilowatt-hours of electrical energy are required to plate 1.00 g of chromium?

6) 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: Cr207" (aq) + 14H* (aq)+ 12e¯ → 2Cr(s) + 7H20 a) How many hours would it take to completely convert 215mL of 1.25M K2C12O7 to elemental chromium? b) How many kilowatt-hours of electrical energy are required to plate 1.00 g of chromium?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter17: Electrochemistry And Its Applications

Section: Chapter Questions

Problem 89QRT: You wish to electroplate a copper surface having an area of 1200 mm2 with a 1.0-m-thick coating of...

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