COMEDK · Chemistry · 18. Electrochemistry
Which one of the following condition will increase the voltage of the cell represented by the equation.
\(\mathrm{Cu}(s)+2 \mathrm{Ag}^{+}(a q) \rightleftharpoons \mathrm{Cu}^{2+}(a q)+2 \mathrm{Ag}(s)\)
- A increase in the dimensions of \(\mathrm{Cu}\) electrode
- B increase in the dimensions of Ag electrode
- C increase in the concentration of \(\mathrm{Cu}^{2+}\) ions
- D increase in the concentration of \(\mathrm{Ag}^{+}\)ions
Answer & Solution
Correct Answer
(D) increase in the concentration of \(\mathrm{Ag}^{+}\)ions
Step-by-step Solution
Detailed explanation
According to Nernst equation, \[ E_{\text {cell }}=E_{\text {cell }}^{\circ}-\frac{0.0591}{n} \log \frac{\left[\mathrm{Cu}^{+2}\right]}{\left[\mathrm{Ag}^{+}\right]^{2}} \] \(\therefore\) The voltage of cell will increase with increase in concentration of \(\mathrm{Ag}^{+}\)ions.
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