Question

Determine the overall cell reaction and the E°cell for the following galvanic cell: Al3+ (aq) + Mg(s) → Al(s) + Mg2+ (aq)

The Standard Reduction Potentials are:

Al3+ + 3e- → Al E° = -1.66 V

Mg2+ + 2e- → Mg E° = -2.37 V

Answer 1

$Al(s) | Al^{3+}(aq) || Mg^{2+}(aq) | Mg(s)$

$E° cell=-2.37-166=-0.71V$