Question

The cell

$\text{Zn }|\text{ Z}\text{n}^{\text{2+}}(\text{1M})\ ||\text{ C}\text{u}^{\text{2+}}(\text{1M})\ |\text{ Cu : }({E^{0}}_{\text{cell}}\text{ = 1.10V})\$was allowed to completely discharge at 298 K. The relative concentration of $\text{Z}\text{n}^{\text{2+}}\text{ to C}\text{u}^{\text{2+}}\left( \frac{\left\lbrack Zn^{2 +} \right\rbrack}{\left\lbrack Cu^{2 +} \right\rbrack} \right)$ is :

(Take$\frac{1.1}{0.059}$= 18.65)

• A. 1037.3
• B. 9.65 × 104
• C. Antilog (24.08)
• D. 37.3

Answer 1

Answer: (A)

1037.3

Answer 2

$\text{0 = + 1.1 - }\frac{\text{0.0591}}{2}\text{log}\frac{\left\lbrack \text{Z}\text{n}^{2 +} \right\rbrack}{\left\lbrack Cu^{2 +} \right\rbrack}\text{ ;log }\frac{\left\lbrack \text{Z}\text{n}^{2 +} \right\rbrack}{\left\lbrack Cu^{2 +} \right\rbrack}\text{ = 37.3.; }\frac{\left\lbrack \text{Z}\text{n}^{2 +} \right\rbrack}{\left\lbrack Cu^{2 +} \right\rbrack}\text{ = 1}\text{0}^{\text{37.3}}$