Determine the Fraction of Ionization of HX If a Solution

Multiple Choice

Determine the fraction of ionization of HX if a solution prepared by dissolving 0.020 mol of HX in 115 g of water freezes at - 0.47 °C. The molal freezing- point- depression constant of water is
1) 86 °C/m.

A) 1.45
B) 0.45
C) 0.044
D) 0.348
E) 0.30