An aqueous MnI, solution is electrolyzed under 1 bar pressure using (a) Write the half-reactions predicted to occur at the anode and cathode, based on the standard cell potentials given below. Standard Reduction Potentials (Volts) at 25 °C 12 + 2e 21r 0.535 02+ 4 H30* + 4 e 6 H20 1.229 2 H20 + 2 e- H2 + 2 OH -0.828 Mn2+ +2eMn -1.180 Enter electrons as e'. Use the smallest integer coefficients possible. Half-reaction at anode: Reactants Products Half-reaction at cathode: Reactants Products (b) What is the expected decomposition potential? V
An aqueous MnI, solution is electrolyzed under 1 bar pressure using (a) Write the half-reactions predicted to occur at the anode and cathode, based on the standard cell potentials given below. Standard Reduction Potentials (Volts) at 25 °C 12 + 2e 21r 0.535 02+ 4 H30* + 4 e 6 H20 1.229 2 H20 + 2 e- H2 + 2 OH -0.828 Mn2+ +2eMn -1.180 Enter electrons as e'. Use the smallest integer coefficients possible. Half-reaction at anode: Reactants Products Half-reaction at cathode: Reactants Products (b) What is the expected decomposition potential? V
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 59P
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Transcribed Image Text:An aqueous MnI2 solution is electrolyzed under 1 bar pressure using platinum electrodes.
(a) Write the half-reactions predicted to occur at the anode and cathode, based on the standard cell potentials given below.
Standard Reduction Potentials (Volts) at 25 °C
I2 + 2e 21"
0.535
02 + 4 H30* + 4 e 6 H20
1.229
2 H20 + 2 e- H2 + 2 OH"
-0.828
Mn2+ + 2e-Mn
-1.180
Enter electrons as e. Use the smallest integer coefficients possible.
Half-reaction at anode:
Reactants
Products
Half-reaction at cathode:
Reactants
Products
(b) What is the expected decomposition potential?
V
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