(b) Calculate emf of the following cell at 25°C:
\[
\text{Zn}(s) \, | \, \text{Zn}^{2+} (0.1M) \, || \, \text{Cd}^{2+} (0.01M) \, | \, \text{Cd}(s)
\]
Given:
\[
E^\circ_{\text{Zn}^{2+}/\text{Zn}} = -0.40 \, \text{V}, \quad E^\circ_{\text{Cd}^{2+}/\text{Cd}} = -0.76 \, \text{V}.
\]