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

Explanation

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 crystallization.