Plotting \( \frac{1}{\Lambda_m} \) against \( c \Lambda_m \) 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:
[\( \Lambda_m = \) molar conductivity, \( \Lambda_m^\circ = \) limiting molar conductivity, \( c = \) molar concentration, \( K_a = \) dissociation constant of HX]