The cell,Zn | Zn^{2+} ,(1 M) || Cu^{2+} (1 M) | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) When the cell is completely discharged,the cell potential $E_{cell} = 0 \ V.$The Nernst equation for the cell reaction is given by:$E_{cell} = E_{

Vedclass · Accepted Answer

$10^{37.3}$

Vedclass · Answer

(D) When the cell is completely discharged,the cell potential $E_{cell} = 0 \ V.$The Nernst equation for the cell reaction is given by:$E_{cell} = E_{cell}^{\circ} - \frac{0.059}{n} \log \left( \frac{[Zn^{2+}]}{[Cu^{2+}]} ight)$Here,$n = 2$ (number of electrons transferred) and $E_{cell}^{\circ} = 1.10 \ V.$Substituting the values:$0 = 1.10 - \frac{0.059}{2} \log \left( \frac{[Zn^{2+}]}{[Cu^{2+}]} ight)$Rearranging the equation:$\log \left( \frac{[Zn^{2+}]}{[Cu^{2+}]} ight) = \frac{1.10 	imes 2}{0.059} \approx 37.288 \approx 37.3$Therefore,$\frac{[Zn^{2+}]}{[Cu^{2+}]} = 10^{37.3}$.

The cell,$Zn\ |\ Zn^{2+} \,(1\ M)\ ||\ Cu^{2+}\ (1\ M)\ |\ Cu$ $(E^o_{cell} = 1.10\ V)$ was allowed to be completely discharged at $298\ K.$ The relative concentration of $Zn^{2+}$ to $Cu^{2+}$ $\left( \frac{[Zn^{2+}]}{[Cu^{2+}]} \right)$ is

Similar Questions

Calculate the equilibrium constant of the reaction,$Cu_{(s)} + 2 Ag^{+}_{(aq)} \longrightarrow Cu^{2+}_{(aq)} + 2 Ag_{(s)}$,given that for the reaction $E^{\circ}_{cell} = 0.46 \ V$.

For a cell reaction involving two electron changes,$E_{\text{cell}}^{\circ} = 0.3 \text{ V}$ at $25^{\circ}\text{C}$. The equilibrium constant of the reaction is:

$Cu^{2+} + 2e^- \to Cu$. On increasing $[Cu^{2+}]$ concentration,electrode potential

Consider the following cell reaction:
$2 Fe_{(s)} + O_{2_{(g)}} + 4 H_{(aq)}^{+} \rightarrow 2 Fe_{(aq)}^{2+} + 2 H_2O_{(l)} \quad E^{\circ} = 1.67 \ V$. At $[Fe^{2+}] = 10^{-3} \ M, P(O_2) = 0.1 \ atm$ and $pH = 3$,the cell potential at $25^{\circ} C$ is (in $V$)

Give the equation to calculate the equilibrium constant $K_C$ of a Daniell cell.

Vedclass Test Series

Exam Paper Generator

Online Exam Module