Maharashtra Board Solutions for Chapter: Electrochemistry, Exercise 8: Exercises

$1 \mathrm{S} {\mathrm{m}}^2 {\mathrm{mol}}^{-1}$ is equal to

The standard potential of the cell in which the following reaction occurs ${\mathrm{H}}_2( \mathrm{g},1 \mathrm{atm})+{\mathrm{Cu}}^{2\oplus }\left(1\mathrm{M}\right)⟶2{\mathrm{H}}^{\oplus }\left(1\mathrm{M}\right)+\mathrm{Cu}\left(\mathrm{s}\right), \left({\mathrm{E}}_{\mathrm{Cu}}^0=0.34 \mathrm{V}\right)$ is

For the cell, $\mathrm{Pb}\left(\mathrm{s}\right)\left|{\mathrm{Pb}}^{2\oplus }(1 \mathrm{M})\right|\left|\mathrm{Ag}{}^{\oplus }(1 \mathrm{M})\right|\mathrm{Ag}\left(\mathrm{s}\right)$, if concentraton of an ion in the anode compartment is increased by a factor of $10$, the emf of the cell will

Consider the half reactions with standard potentials

(i) ${\mathrm{Ag}}^{\oplus }\left(\mathrm{aq}\right)+{\mathrm{e}}^{\ominus }⟶\mathrm{Ag}\left(\mathrm{s}\right) {\mathrm{E}}^0=0.8 \mathrm{V}$

(ii) ${\mathrm{I}}_2( \mathrm{s})+2{\mathrm{e}}^{\ominus }⟶2{\mathrm{I}}^{\ominus }\left(\mathrm{aq}\right) {\mathrm{E}}^0=0.53 \mathrm{V}$

(iii) ${\mathrm{Pb}}^{2\oplus }\left(\mathrm{aq}\right)+2{\mathrm{e}}^{\ominus }⟶\mathrm{Pb}\left(\mathrm{s}\right) {\mathrm{E}}^0=-0.13 \mathrm{V}$

(iv) ${\mathrm{Fe}}^{2\oplus }\left(\mathrm{aq}\right)+2{\mathrm{e}}^{\ominus }⟶\mathrm{Fe}\left(\mathrm{s}\right) {\mathrm{E}}^0=-0.44 \mathrm{V}$

The strongest oxidising and reducing agents respectively are

For the reaction $\mathrm{Ni}\left(\mathrm{s}\right)+{\mathrm{Cu}}^{2\oplus }\left(1\mathrm{M}\right)\to {\mathrm{Ni}}^{2\oplus }\left(1\mathrm{M}\right)+\mathrm{Cu}\left(\mathrm{s}\right), {\mathrm{E}}_{\mathrm{cell} }^0=0.57 \mathrm{V}, \mathrm{\Delta G}°$ of the reaction is

Which of the following is not correct?

The oxidation reaction that takes place in lead storage battery during discharge is

Which of the following expressions represent molar conductivity of ${\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3$?