Embibe Experts Solutions for Chapter: Electrochemistry, Exercise 1: Exercise 1

Given that ${\mathrm{E}}_{{\mathrm{Fe}}^{2+}/\mathrm{Fe}}°=-0.44\vee ;{\mathrm{E}}_{{\mathrm{Fe}}^{3+}/{\mathrm{Fe}}^{2+}}°=0.77\vee$ if ${\mathrm{Fe}}^{2+},{\mathrm{Fe}}^{3+}$ and${\mathrm{Fe}}_{\left(\mathrm{s}\right)}$ are kept together, then

Which pair of electrolytes could not be distinguished by the products of electrolysis using inert electrodes?

In a galvanic cell,

When a lead storage battery is discharged:

If $\mathrm{E}{°}_{\left({\mathrm{Fe}}^{2+}\overline{)\mathrm{Fe}}\right)}=-0.441 \mathrm{V}$ and $\mathrm{E}{°}_{\left({\mathrm{Fe}}^{3+}\overline{){\mathrm{Fe}}^{2+}}\right)}=0.771 \mathrm{V}$, the standard E.M.F. of the reaction : $\mathrm{Fe}+2{\mathrm{Fe}}^{3+}\to 3{\mathrm{Fe}}^{2+}$ will be
 

How many faradays are required to reduce one mole of ${\mathrm{MnO}}_4^{-}$ to ${\mathrm{Mn}}^{2+}$ :

The ionisation constant of a weak acid electrolyte is $25\times {10}^{-6}$, while the equivalent conductance of its $0.01 \mathrm{M}$ solution is $19.6 \mathrm{S} {\mathrm{cm}}^2 {\mathrm{eq}}^{-1}$. The equivalent conductance of the electrolyte at infinite dilution (in $\mathrm{S} {\mathrm{cm}}^2 {\mathrm{eq}}^{-1}$) will be:

$\mathrm{Zn}\left|{\mathrm{Zn}}^{2+}\left({\mathrm{C}}_1\right)\Vert {\mathrm{Zn}}^{2+}\left({\mathrm{C}}_2\right)\right|\mathrm{Zn}$ for this cell $\mathrm{\Delta G}$ is negative if