question_answer 45)

  Give an example each for the mixture having the following characteristics. Suggest a suitable method to separate the components of these mixtures. (a) A volatile and a non-volatile component. (b) Two volatile components with appreciable difference in boiling points. (c) Two immiscible liquids. (d) One of the components changes directly from solid to gaseous state. (e) Two or more coloured constituents soluble in some solvent.

Answer:

  (a)  Example Mixture of acetone and water. Method   Simple distillation can be used to separate a mixture of volatile and non-volatile components. (b)   Example Mixture of kerosene and petrol. Method Simple distillation can be used to separate two volatile components with appreciable difference in boiling points. (c) Example Mixture of mustard oil and water. Method Separating runnel is used to separate a mixture of immiscible liquids. (d) 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. (e)   Example A mixture of different pigments  from an extract of flower petals. Method Chromatography method can be used to separate two different substances present in the same solution.