Question

Question 12.27 Name a suitable technique of separation of the components from a mixture of calcium sulphate and camphor.

Class XI Organic Chemistry : Some Basic Principles and Techniques Page 363

Answer 1

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A mixture of CaSO₄ and camphor can be separated by sublimation. Because camphor is sublimable but CaSO₄ is not therefore, sublimation of the mixture gives camphor on the sides of funnel while CaSO₄ is left in the china dish.

Answer 2

A mixture of CaSO4 and camphor can be separated by the following two methods :
(i) Camphor is sublimable but CaSO4 is not, therefore , sublimation of the mixture gives camphor on the sides of funnel while CaSO4 is left in the chine dish .

(ii) Camphor is soluble in organic like CCl4 , CH3Cl etc while CaSO4 is not soluble in organic due to it is ionic compound. therefore when the mixture is shaken with the solvent, camphor goes into solution while CaSO4 remains as residue . it is filtered and evaporation of solvent gives camphor.