Lactic acid partially dissociates according to this following equation: CH3CH(OH)COOH(aq) ⇌ H+(aq) + CH3CH(OH)COO–(aq). A solution is formed by dissolving 1.50 mol of lactic acid in 1.00 kg water, where 1.00% of lactic acid dissociates to ions. Calculate the freezing point of the solution, given that Kf for water is 1.86 ºC/m.