Ni-cad (nickel-cadmium) batteries have a slightly lower cell potential than the common alkaline value of 1.5 V normally used in flashlights. They have a cadmium anode, which is oxidized to Cd(OH)2(s) in a basic background electrolyte of concentrated OH", and a cathode half-reaction in which NiO(OH) (s) is reduced to Ni(OH)2(s). What is the value of AG°cell? The standard reduction potentials of the half-reactions in nicad batteries are: 2NIO(OH)(s) + 2H,0(1) + 2e → 2Ni(OH),(s) +20H (aq) E°, = 1.32 V red Cd(OH), (s) +2e → Cd(s) + 20H (aq) E, red - 0.403 V

Ni-cad (nickel-cadmium) batteries have a slightly lower cell potential than the common alkaline value of 1.5 V normally used in flashlights. They have a cadmium anode, which is oxidized to Cd(OH)2(s) in a basic background electrolyte of concentrated OH", and a cathode half-reaction in which NiO(OH) (s) is reduced to Ni(OH)2(s). What is the value of AG°cell? The standard reduction potentials of the half-reactions in nicad batteries are: 2NIO(OH)(s) + 2H,0(1) + 2e → 2Ni(OH),(s) +20H (aq) E°, = 1.32 V red Cd(OH), (s) +2e → Cd(s) + 20H (aq) E, red - 0.403 V

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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