$ \wedge _m^ \circ $ for NaCl, HCl and NaA are 126.4, 425.9 and 100.5 S cm2 mol–1, respectively. If the conductivity of 0.001 M HA is- 5 $ \times $ 10–5 S cm–1, degree of dissociation of HA is -

Question

$ \wedge _m^ \circ $ for NaCl, HCl and NaA are 126.4, 425.9 and 100.5 S cm² mol^–1, respectively. If the conductivity of 0.001 M HA is-

5 $ \times $ 10^–5 S cm^–1, degree of dissociation of HA is -