Question

Which of the following expressions is used to find the cell potential of $Cd_{(s)} | Cd_{(aq)}^{2+} \, || \, Cu_{(aq)}^{2+} | Cu_{(s)}$ cell at $25^\circ \text{C}$?

• A. $E_{cell}=E_{cell}^{o}-0.0296~\log\frac{[Cd^{++}]}{[Cu^{++}]}$
• B. $E_{cell}=E_{cell}^{o}+0.0296~\log\frac{[Cd^{++}]}{[Cu^{++}]}$
• C. $E_{cell}=E_{cell}^{o}-0.0592~\log\frac{[Cu^{++}]}{[Cd^{++}]}$
• D. $E_{cell}=E_{cell}^{o}+0.0592~\log\frac{[Cu^{++}]}{[Cd^{++}]}$

Hint:

Chemistry Tip: In the Nernst equation $E = E^\circ - \frac{0.0592}{n} \log Q$, always remember that $Q$ is $[\text{Anode}]/[\text{Cathode}]$ for standard galvanic cells with metal electrodes.

Answer 1

The Correct Option is A