Chemistry

Problem

The freezing point depression of a 0.1 M solution of weak acid (HX) is

-0.20^{\circ}\text{C}

. What is the value of equilibrium constant for the reaction?

\text{HX}(\text{aq}) \rightleftharpoons \text{H}^{+}(\text{aq}) + \text{X}^{-}(\text{aq})

[Given :

K_f

for water

= 1.8 \text{ kg mol}^{-1}\text{K}

. & Molality

=

Molarity]