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

The conductivity of a saturated solution of ${\mathrm{BaSO}}_4$ is $3.06\times {10}^{-6} {\mathrm{ohm}}^{-1} {\mathrm{cm}}^{-1}$ and its equivalent conductance is $1.53 {\mathrm{ohm}}^{-1} {\mathrm{cm}}^2 {\mathrm{equiv}}^{-1}$. The ${\mathrm{K}}_{\mathrm{sp}}$ for ${\mathrm{BaSO}}_4$ will be:

The electrolysis of a concentrated aqueous solution of $\mathrm{NaCl}$ results in:

The standard cell potential for $\mathrm{Zn}\left|{\mathrm{Zn}}^{2+}\Vert {\mathrm{Cu}}^{2+}\right|\mathrm{Cu}$ is $1.10 \mathrm{V}$. When the cell is completely discharged, $\log \left[{\mathrm{Zn}}^{2+}\right]/\left[{\mathrm{Cu}}^{2+}\right]$ is closest to

Which of the following metals will precipitate copper from copper sulphate solution?

Among $\mathrm{Mg}, \mathrm{Cu}, \mathrm{Fe}, \mathrm{Zn},$ the metal that does not produce hydrogen gas in reaction with hydrochloric acid  in water is:

The amount of $\mathrm{Ag}$ (atomic mass $=108$) deposited at the cathode when a current of $0.5 \mathrm{amp}$ is passed through a solution of ${\mathrm{AgNO}}_3$ for $1$ hour is closest to:

The standard Gibbs free energy change $\left({\mathrm{\Delta G}}^0 \mathrm{in} \mathrm{kJ} {\mathrm{mol}}^{-1}\right)$ in a Daniel cell $\left(\mathrm{E}°{}_{\mathrm{cell}}=1.1 \mathrm{V}\right)$, when $2$ moles of $\mathrm{Zn}\left(\mathrm{s}\right)$ is oxidised at $298 \mathrm{K}$, is closed to:

The standard free energy change (in $\mathrm{J}$) for the reaction $3{\mathrm{Fe}}^{2+ }\left(\mathrm{aqeous}\right)+2\mathrm{Cr} \left(\mathrm{s}\right)\to 2{\mathrm{Cr}}^{3+ }\left(\mathrm{aqeous}\right)+3\mathrm{Fe} \left(\mathrm{s}\right)$ given ${\mathrm{E}}_{{\mathrm{Fe}}^{2+}/\mathrm{Fe}}^0=-0.44 \mathrm{V}$ and ${\mathrm{E}}_{{\mathrm{Cr}}^{3+}/\mathrm{Cr}}^0=-0.74 \mathrm{V}$ is $\left(\mathrm{F}=96500 \mathrm{C}\right)$.