Quinine is a natural product extracted from the bark of the cinchona tree which is native to South America. Quinine is used as an ant malarial agent. When 2.24 g of quinine is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 5.74 °C. The freezing point as well as Kf constant for cyclohexane can be found here. Compute the molar mass of quinine.