Question

Why on dilution the $\Lambda MofC{H}_{3}COOH$ increases drastically,
while that of $C{H}_{3}COONa$ increases
gradually?

Answer 1

Solution:
$C{H}_{3}COOH$ is a weak electrolyte and
$C{H}_{3}COOHa$ is a strong electrolyte.

A weak electrolyte has a lower degree of
dissociation at higher concentrations but
upon dilution, the degree of dissociation
increases.

The number of ions per unit volume increases
and this leads to an increase in Molar
conductivity. So, it increases drastically



$C{H}_{3}COOH+H_{2}O\rightleftharpoons C{H}_{3}CO{O}^{-}+H_3{O}^{+}$


For strong electrolytes ( completely
dissociated ) upon dilution, the number of ions
doesn’t change much, but interionic attraction
decreases, and hence the increase is gradual.