Plotting $1/{\wedge }_m$ against $c{\wedge }_m$ for aqueous solutions of a monobasic weak acid (HX) resulted in a straight line with y-axis intercept of  P and slope of  S. The ratio P / S is
[ ${\wedge }_m$= Molar conductivity of  HX at concentration 'C'.

${{\wedge }^{\circ }}_m$ = Limiting molar conductivity of  HX.
c = Molar concentration of  HX.
$k_a$  = Dissociation constant of Hx]