The resistance of $0.5 \mathrm{N}$ solution of an electrolyte in a cell was found to be $45 \mathrm{ohm}$. Calculate the equivalent conductance of the solution if the electrodes in a cell are $2.2 \mathrm{cm}$ apart and have an area of $3.8 \mathrm{sq}.\mathrm{cm}$ .

The following reaction occurs in a cell $\mathrm{Zn}\left(\mathrm{s}\right)+{\mathrm{Co}}^{2+}\rightleftharpoons \mathrm{Co}\left(\mathrm{s}\right)+{\mathrm{Zn}}^{2+}$.

Write the electrode reaction and find out the e.m.f. cell, given

$\mathrm{Zn}\to {\mathrm{Zn}}^{2+}, {\mathrm{E}}^0=0.76 \mathrm{V}\mathrm{Co}\to {\mathrm{Co}}^{2+}, {\mathrm{E}}^0=0.28 \mathrm{V}$

Define equivalent and molar conductance. Give their relationship with specific conductance. How does equivalent conductance vary with increase in temperature?

How many atoms of calcium will be deposited from fused ${\mathrm{CaCl}}_2$ by a current of $25$ milliamperes passes for $60$ seconds?