Question

Quinine is a natural product extracted from the bark of the cinchona tree, which is native to South America. Quinine is used as an antimalarial agent. When 0.783 g of quinine is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 2.01 ∘ C. Look up the freezing point and K f constant for cyclohexane in the Colligative Constants table. Calculate the molar mass of quinine.

Answer 1

so molar mass of quinine = 324.1 g/mol