Question

Give an example each for the mixture having the following characteristics. Suggest a suitable method to separate the components of these mixtures.
(a) One of the components changes directly from solid to gaseous state.
(b) Two or more coloured constituents soluble in some solvent.

Answer 1

(a) Example: Mixture of ammonium chloride and common salt.
Method: Sublimation can be used to separate the mixture in which one component changes directly from solid to gas.

(b) Example: A mixture of different pigments from an ink.
Method: Chromatography can be used to separate mixtures of coloured compounds.

This method of separation is based on the fact that two substances or more substances that are dissolved in the same solvent have varying solubility.