Question
Explain the methods by which you would separate camphor from sodium chloride.
Solution
Camphor would separate from sodium chloride by sublimation or Filtration.
(i) Sublimation: Mixture of camphor and sodium chloride is heated in a china dish covered with an inverted funnel closed from the lower end. Camphor sublimes and collects on the inner wall of the funnel. Sodium chloride is left as residue in china dish.
(ii) Filtration. Dissolve the mixture in water. Sodium chloride dissolves in water while camphor remains as residue. It is then filtered. Residue left on filter paper is camphor. Sodium chloride is then recovered from water by evaporation.
