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

$\Delta \mathrm{G}°\text{ of the cell reaction }\mathrm{AgCl}\left(\mathrm{s}\right)+1/2{\mathrm{H}}_2\left(\mathrm{g}\right)\rightleftharpoons \mathrm{Ag}\left(\mathrm{s}\right)+{\mathrm{H}}^{+}+\mathrm{Cl}\text{ is }-21.52\mathrm{kJ}.$

$∆\mathrm{G}°\text{ of }2\mathrm{AgCl}\left(\mathrm{s}\right)+\mathrm{H}{}_2(\mathrm{g})=2\mathrm{Ag}(\mathrm{s})+2{\mathrm{H}}^{+}+2{\mathrm{Cl}}^{-}$

Given the standard reduction potentials $\mathrm{T}{\ell }^{+}+{\mathrm{e}}^{-}⟶\mathrm{T}\ell ,\mathrm{E}°=-0.34\mathrm{V}\text{ and }\mathrm{T}{\ell }^{3+}+2{\mathrm{e}}^{-}⟶\mathrm{T}{\ell }^{+},\mathrm{E}°=1.25\mathrm{V}$

Examine the spontaneity of the reaction, $3T{\ell }^{+}⟶2T\ell +T{\ell }^{3+}.$ Also, find $E°$ for this disproportionation.

What is the correct Nernst equation for reaction taking place in the following cell?

${\mathrm{Mg}}_{\left(\mathrm{s}\right)}{\left|{\mathrm{Mg}}^{2+}\left(\mathrm{eq}\right)\Vert \mathrm{C}\right|}^{-}\text{(eq) }\left|\mathrm{C}{|}_{2\left(\mathrm{g}\right)}\right(1\mathrm{atm})/\mathrm{Pt}$

$\text{ Calculate free energy change for the reaction }\frac{1}{2}\mathrm{Cu}\left(\mathrm{s}\right)+\frac{1}{2}{\mathrm{Cl}}_2\left(\mathrm{g}\right)\rightleftharpoons \frac{1}{2}{\mathrm{Cu}}^{2+}+{\mathrm{Cl}}^{-}\text{taking place at }$

$25°\mathrm{C}$ in a cell whose standard e.m.f. is $1.02$ volts.

The standard electrode potential$\left(\mathrm{E}°\right)$ for ${\mathrm{OCl}}^{-}/{\mathrm{Cl}}^{-}$ and ${\mathrm{Cl}}^{-}/\frac{1}{2}{\mathrm{Cl}}_2$, respectively, are $0.94\mathrm{V}$ and $-1.36\mathrm{V}$

The$E°$ value for $OC{l}^{-}/\frac{1}{2}{C}_2$ will be

What is the potential of a cell containing two hydrogen electrodes the negative one in contact with${10}^{-8}$

${\mathrm{MH}}^{+}$ and positive one in contact with $0.025{\mathrm{MH}}^{+}\backslash \mathrm{left}({\mathrm{P}}_{{\mathrm{H}}_2}$ is same in both electrodes)?