Question

A mixture is formed by two kinds of matter, the molecules of which possess only vibratory motion. If the change in solubililty of two substances in a given solvent differs widely with the change in temperature, how can these two solids be separted from the solvent?

Answer 1

Solids possess the molecules which have only vibratory motion. Thus both the substances are solids. As their solubility in a particular solvent differs in a particular range of temperature, they can be separated by fractional crystallisation