The standard reduction potentials for the following half cell reactions at $2 5^{\circ} C$ are given below
Ag⁺(aq) + e⁻ → Ag(s) ; $E^{\circ} = 0.80 V$
Sn²⁺(aq) + 2e⁻ → Sn(s) ; $E^{\circ} = - 0.14 V$
The emf of the following electrochemical cell is:
Sn | Sn²⁺ (1 M) || Ag⁺ (1 M) | Ag

Question

The standard reduction potentials for the following half cell reactions at $2 5^{\circ} C$ are given below

Ag⁺(aq) + e⁻ → Ag(s) ; $E^{\circ} = 0.80 V$

Sn²⁺(aq) + 2e⁻ → Sn(s) ; $E^{\circ} = - 0.14 V$

The emf of the following electrochemical cell is:

Sn | Sn²⁺ (1 M) || Ag⁺ (1 M) | Ag

TestHub · Accepted Answer

The cell notation Sn | Sn²⁺ || Ag⁺ | Ag indicates Sn is oxidized and Ag⁺ is reduced.

$E_{ce ll}^{\circ} = E_{re d u c t i o n}^{\circ} (c a t h o d e) - E_{re d u c t i o n}^{\circ} (an o d e) = 0.80 - (- 0.14)$

$= 0.94 V$

Chemistry - Electrochemistry Question with Solution | TestHub