Why on dilution the `Lambda_(m)` of `CH_(3)COOH` increases drastically, while that of `CH_(3)COONa` increases gradually?

Explanation

`CH_(3)COOH` is a weak electrolyte. On dilution, degree of dissociation increaes and hence number of ions increases and, therefore, `wedge_(m)` increases drastically. On the other hand, `CH_(3)COONa` is a strong electrolyte. On dilution, number of ions remains the same. Only interionic attractions decrease and hence `wedge_(m)` increases gradually.