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) + 2H₂0 (1) + +2e → 2Ni (OH)₂ (s) + 2OH(aq) Eº, = 1.32 V red Cd (OH)₂ (s) +2e →→ Cd(s) + 2OH(aq) Ered = -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) + 2H₂0 (1) + +2e → 2Ni (OH)₂ (s) + 2OH(aq) Eº, = 1.32 V red Cd (OH)₂ (s) +2e →→ Cd(s) + 2OH(aq) Ered = -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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Question

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 AGºcell?
The standard reduction potentials of the half-reactions in nicad batteries are:
2NiO (OH) (s) + 2H₂O(1) +2e¯.
Cd (OH)₂ (s) +2e →→→ Cd(s) + 2OH(aq) Ered= -0.403 V
5th attempt
2Ni (OH)₂ (s) + 2OH(aq) Eº, = 1.32 V
red
kJ
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