(a)
Interpretation: The overall cell reaction and standard electrode potential for the voltaic cell with the following half-reactions need to be determined.
Concept Introduction: In a voltaic cell, oxidation takes place at the anode and reduction takes place at the cathode. The overall reaction is the sum of two half-reactions. The standard electrode potential of the cell is calculated from the standard electrode potential of the cathode and anode as follows:
(a)
Explanation of Solution
The reduction electrode potentials for the given two half-reactions are as follows:
Since the reduction electrode potential for the first reaction is higher than a second reduction of
The reactions at the cathode and anode will be as follow:
Cathode-Reduction reaction:
Anode-Oxidation reaction:
The overall cell reaction will be as follow:
Thus, the overall cell reaction will be:
The standard electrode potential of the cell is calculated as follows:
Substitute the values,
Thus, the standard electrode potential for the voltaic cell is
(b)
Interpretation: The overall cell reaction and standard electrode potential for the voltaic cell with the following half-reactions need to be determined.
Concept Introduction: In a voltaic cell, oxidation takes place at the anode and reduction takes place at the cathode. The overall reaction is the sum of two half-reactions. The standard electrode potential of the cell is calculated from the standard electrode potential of the cathode and anode as follows:
(b)
Explanation of Solution
The reduction electrode potentials for the given two half-reactions are as follows:
Since the reduction electrode potential for the second reaction is higher than the first, reduction of
The reactions at the cathode and anode will be as follow:
Cathode-Reduction reaction:
Anode-Oxidation reaction:
The overall cell reaction will be as follow:
Thus, the overall cell reaction will be:
The standard electrode potential of the cell is calculated as follows:
Substitute the values,
Thus, the standard electrode potential for the voltaic cell is
Chapter 21 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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