When 0020 Mol of a Weak Acid HA Is Dissolved in in Enough

Multiple Choice

When 0.020 mol of a weak acid HA is dissolved in enough water to make 1.0 L of solution, [H⁺] is 3.6 ×10^-3 M. Calculate the freezing point of this solution. Assume that the molarity concentration is equal to the molality concentration, and assume ideal behavior. K_f (H₂O) is 1.86°C kg/mol.

A) -0.088°C
B) -0.044°C
C) -0.037°C
D) +0.044°C
E) +0.037°C