(a) A voltaic cell is constructed as follows: Zn | Zn2+ | H+ | H2 The half-cell reactions are: Zn ---à Zn2+ + 2e– E° = 0.76 V 2H+ + 2e- à H2 E° = 0.0V If the voltage of the cell is 0.45V at 25°C when [Zn2+] = 1.0 M and pH2 = 1.0 atm, what is [H+]? For the voltaic cell described in part (a), find the pH of the cathodic solution when pH2 = 1.0 atm and [Zn2+ ] = 0.1 M and the E°cell = 0.542 V.
(a) A voltaic cell is constructed as follows: Zn | Zn2+ | H+ | H2 The half-cell reactions are: Zn ---à Zn2+ + 2e– E° = 0.76 V 2H+ + 2e- à H2 E° = 0.0V If the voltage of the cell is 0.45V at 25°C when [Zn2+] = 1.0 M and pH2 = 1.0 atm, what is [H+]? For the voltaic cell described in part (a), find the pH of the cathodic solution when pH2 = 1.0 atm and [Zn2+ ] = 0.1 M and the E°cell = 0.542 V.
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter19: Principles Of Chemical Reactivity: Electron Transfer Reactions
Section: Chapter Questions
Problem 83GQ
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- (a) A voltaic cell is constructed as follows: Zn | Zn2+ | H+ | H2
The half-cell reactions are:
Zn ---à Zn2+ + 2e– E° = 0.76 V 2H+ + 2e- à H2 E° = 0.0V
If the voltage of the cell is 0.45V at 25°C when [Zn2+] = 1.0 M and pH2 = 1.0 atm, what is [H+]?
- For the voltaic cell described in part (a), find the pH of the cathodic solution when pH2 =
1.0 atm and [Zn2+ ] = 0.1 M and the E°cell = 0.542 V.
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