(7.12) A technician plates a faucet with 0.86g Cr metal by electrolysis of aqueousCr2(SO4)3. If 12.5 min is allowed for theplating, what current is needed?Molar mass of Cr: 51.996 g/molAnalysis/Strategy: mass of Cr ® mol Crmol e¯ (or Faraday) ® coulombs ®amperesReduction half-reaction of chromiumsolution to chromium metal: Cr*,+3,(aq)e¯ ® Cr(s)+chromium solution, Cr2(SO4)3, has theions: [Cr*3 s04-²]Answer: The current needed isampere. (2 sig fig)

Electrolysis is a process to change a substance chemically by passing electric current. When…

Answered: (7.12) A technician plates a faucet…

(7.12) A technician plates a faucet with 0.86 g Cr metal by electrolysis of aqueous Cr2(SO4)3. If 12.5 min is allowed for the plating, what current is needed?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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