To examine the effect of ion removal on cell voltage, a chemist constructs two voltaic cells, each with a standard hydrogen electrode in one compartment. One cell also contains a Pb/Pb21 half-cell; the other contains a Cu/Cu2+ half-cell.(a) What is Eo of each cell at 29o K?(b) Which electrode in each cell is negative?(c) When Na2S solution is added to the Pb21 electrolyte, solid PbS forms. What happens to the cell voltage?(d) When sufficient Na2S is added to the Cu2+ electrolyte, CuS forms and [Cu2+] drops to 1x10-16 M. Find the cell voltage.
To examine the effect of ion removal on cell voltage, a chemist constructs two voltaic cells, each with a standard hydrogen electrode in one compartment. One cell also contains a Pb/Pb21 half-cell; the other contains a Cu/Cu2+ half-cell.(a) What is Eo of each cell at 29o K?(b) Which electrode in each cell is negative?(c) When Na2S solution is added to the Pb21 electrolyte, solid PbS forms. What happens to the cell voltage?(d) When sufficient Na2S is added to the Cu2+ electrolyte, CuS forms and [Cu2+] drops to 1x10-16 M. Find the cell voltage.
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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To examine the effect of ion removal on cell voltage, a
chemist constructs two voltaic cells, each with a standard hydrogen electrode in one compartment. One cell also contains a
Pb/Pb21 half-cell; the other contains a Cu/Cu2+ half-cell.
(a) What is Eo of each cell at 29o K?
(b) Which electrode in each cell is negative?
(c) When Na2S solution is added to the Pb21 electrolyte, solid PbS
forms. What happens to the cell voltage?
(d) When sufficient Na2S is added to the Cu2+ electrolyte, CuS
forms and [Cu2+] drops to 1x10-16 M. Find the cell voltage.
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