Chemistry Practice Problems Freezing Point Depression Practice Problems Solution: Reserpine is a natural product isolated from the r...

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Solution: Reserpine is a natural product isolated from the roots of the shrub Rauwolfia serpentina. It was first synthesized in 1956 by Nobel Prize winner R. B. Woodward. It is used as a tranquilizer and sedative. When 1.00 g reserpine is dissolved in 25.0 g camphor, the freezing-point depression is 2.63°C (Kf for camphor is 40.°C • kg/mol). Calculate the molality of the solution and the molar mass of reserpine.

Problem

Reserpine is a natural product isolated from the roots of the shrub Rauwolfia serpentina. It was first synthesized in 1956 by Nobel Prize winner R. B. Woodward. It is used as a tranquilizer and sedative. When 1.00 g reserpine is dissolved in 25.0 g camphor, the freezing-point depression is 2.63°C (Kf for camphor is 40.°C • kg/mol). Calculate the molality of the solution and the molar mass of reserpine.