In some applications nickel–cadmium batteries have beenreplaced by nickel–zinc batteries. The overall cell reactionfor this relatively new battery is:2 H2O(l) + 2 NiO(OH)(s) + Zn(s)---->2 Ni(OH)2(s) + Zn(OH)2(s)(a)What is the cathode half-reaction? (b)What is the anodehalf-reaction? (c) A single nickel–cadmium cell has a voltageof 1.30 V. Based on the difference in the standard reductionpotentials of Cd2+ and Zn2+, what voltage would youestimate a nickel–zinc battery will produce? (d) Would youexpect the specific energy density of a nickel–zinc battery tobe higher or lower than that of a nickel–cadmium battery?
In some applications nickel–cadmium batteries have beenreplaced by nickel–zinc batteries. The overall cell reactionfor this relatively new battery is:2 H2O(l) + 2 NiO(OH)(s) + Zn(s)---->2 Ni(OH)2(s) + Zn(OH)2(s)(a)What is the cathode half-reaction? (b)What is the anodehalf-reaction? (c) A single nickel–cadmium cell has a voltageof 1.30 V. Based on the difference in the standard reductionpotentials of Cd2+ and Zn2+, what voltage would youestimate a nickel–zinc battery will produce? (d) Would youexpect the specific energy density of a nickel–zinc battery tobe higher or lower than that of a nickel–cadmium battery?
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
In some applications nickel–cadmium batteries have been
replaced by nickel–zinc batteries. The overall cell reaction
for this relatively new battery is:
2 H2O(l) + 2 NiO(OH)(s) + Zn(s)
---->2 Ni(OH)2(s) + Zn(OH)2(s)
(a)What is the cathode half-reaction? (b)What is the anode
half-reaction? (c) A single nickel–cadmium cell has a voltage
of 1.30 V. Based on the difference in the standard reduction
potentials of Cd2+ and Zn2+, what voltage would you
estimate a nickel–zinc battery will produce? (d) Would you
expect the specific energy density of a nickel–zinc battery to
be higher or lower than that of a nickel–cadmium battery?
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