The equivalent conductivity of 0.1 N  CH3COOH at 250C is 80 and at infinite dilution is 400  Ohm−1cm2equi−1 The degree of dissociation of (CH3COOH) is

For weak electrolyte(CH3COOH)  the change in equivalent conductance (∧eq) with dilution Is due to increase in degree of dissociation  α is a degree of dissociation then it can be approximated to ratio of equivalent conductivity to limiting equivalent conductanceα=∧eq∧eq0     =80400     =0.2