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Chemistry II

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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 3.28 g of quinine is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 8.43 °C. The freezing point and Kf constant for cyclohexane can be found here.
Calculate the molar mass of quinine.

  • Chemistry II - ,

    delta T = Kf*m
    Solve for m.

    m = mols quinine/kg solvent
    Solve for mol quinine

    mol quinine = g quinine/molar mass quinine.
    Solve for molar mass.

  • Chemistry II - ,

    43.4

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