Question

For the cell shown below 

Zn(s) |ZnSO₄(aq)| |CuSO₄(aq)| Cu(s)

Calculate standard cell potential if standard state reduction electrode potentials for Cu²⁺ |Cu and Zn²⁺| Zn are +0.34 V and -0.76 V respectively.

Answer 1

E⁰_cell = E⁰_right - E⁰_right

= 0.34 - (-0.76)

= 0.34 + 0.76 = 1.10 Volt

Left hand electrod; Zn(s) → 

Right hand electrold; Cu²⁺(aq) + 2e → Cu(s)

Cell concentration; Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)