The table lists several standard reduction half-reactions.
1. Cl₂(g) + 2 e⁻ → 2 Cl⁻(aq) E° = +1.36 V
2. Fe³⁺ + e⁻ → Fe²⁺ E° = +0.77 V
3. Cu²⁺ + 2 e⁻ → Cu(s) E° = +0.34 V
4. Ni²⁺ + 2 e⁻ → Ni(s) E° = –0.25 V
5. Zn²⁺ + 2 e⁻ → Zn(s) E° = –0.76 V
Design a galvanic cell that achieves a standard cell potential of at least +0.80 V without using silver electrodes. Specify (a) which half-reaction occurs at the cathode and which at the anode, (b) the balanced overall cell reaction, and (c) the resulting E°cell value.