Q.
The variation in $\Lambda_{m}$ with concentration for a strong electrolyte can be represented by the equation,
$\Lambda_{m}=\Lambda^{\circ}_{m}-AC^{1/2}$
The value of constant $A$ for a given solvent and temperature depends upon the type of electrolyte i.e., cations and anions produced on dissociation of electrolyte in the solution.
$NaCl$, $MgCl_2$ and $CaSO_4$ are known as
Electrochemistry
Solution: