Concept explainers
The following half-cells are available: Ag(s);
(a) In which of the voltaic cells does the copper electrode serve as the cathode? In which of the voltaic cells does the cobalt electrode serve as the anode?
(b) Which combination of half-cells generates the highest potential? Which combination generates the lowest potential?
(a)
To determine:
The nature of Cu and Co in the different cells
Explanation of Solution
The electrode potentials are given as:
Since in
Similarly, in
(b)
To determine:
The highest and the lowest cell potential
Explanation of Solution
Since,
The reactions of the six voltaic cells are:
Since, Nernst equation at 298K is given by:
Hence,for the first cell
Similarly,
From the above solution:
Highest cell potential:
- cell
- cell
Lowest cell potential:
Hence in the given cells,
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Chapter 13 Solutions
Chemistry for Engineering Students
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