WBJEE · Chemistry · Electrochemistry
Li occupies higher position in the electrochemical series of metals as compared to Cu since
- A the standard reduction potential of \(\mathrm{Li}^{+} / \mathrm{Li}\) is lower than that of \(\mathrm{Cu}^{2+} / \mathrm{Cu}\)
- B the standard reduction potential of \(\mathrm{Cu}^{2+} / \mathrm{Cu}\) is lower than that of \(\mathrm{Li}^{+} / \mathrm{Li}\)
- C the standard oxidation potential of \(\operatorname{Li} / \mathrm{Li}^{+}\) is lower than that of \(\mathrm{Cu} / \mathrm{Cu}^{2+}\)
- D \(\mathrm{L} \mathrm{i}\) is smaller in size as compared to \(\mathrm{Cu}\)
Answer & Solution
Correct Answer
(A) the standard reduction potential of \(\mathrm{Li}^{+} / \mathrm{Li}\) is lower than that of \(\mathrm{Cu}^{2+} / \mathrm{Cu}\)
Step-by-step Solution
Detailed explanation
In the electrochemical series, metals are arranged in increasing order of their standard reduction potential. The standard reduction potentials of \(L^{+} / L\) and \(C u^{2+} / C u\) are -3.05 V and \(+.034 \mathrm{V}\) respectively. Therefore, Li occupies higher position in…
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