Calculate the cell voltage of the voltaic cell which is set up by joining the following half-cells at 25°C:
Al/Al3+ (0.001 M) and Ni/Ni2+ (0.001 M)
Given: \( E^\circ_{\text{Ni}^{2+}/\text{Ni}} = -0.25 \, \text{V}, \, E^\circ_{\text{Al}^{3+}/\text{Al}} = -1.66 \, \text{V} \)