A mixture of three compounds, A, B, and C is to be separated and purified by crystallization Their solubilities in g/100mL ethanol are given below: Solvent A Cold 1.05 5.60 4.20 Hot 20.5 2.3 3.50 a. If a mixture containing 4.0 g of each A, B and C is recrystallized from 100 mL ethanol, which compound would be obtained pure? b. If the filtrate from (a) is evaporated to 50 mL, which of the compound(s) will separate upon cooling? What is its purity?

A mixture of three compounds, A, B, and C is to be separated and purified by crystallization Their solubilities in g/100mL ethanol are given below: Solvent A Cold 1.05 5.60 4.20 Hot 20.5 2.3 3.50 a. If a mixture containing 4.0 g of each A, B and C is recrystallized from 100 mL ethanol, which compound would be obtained pure? b. If the filtrate from (a) is evaporated to 50 mL, which of the compound(s) will separate upon cooling? What is its purity?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section: Chapter Questions

Problem 29QRT

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