Question

2. How will you separate the following mixture?
(a) common salt, sulphur powder and sand. (b) Camphor, common salt and sandt. sand! (c) Water, groundnut oil and common salt.
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Answer 1

Explanation:

a)Common salt is soluble in water but insoluble in carbon disulphide. Sand is insoluble in both. When sand, common salt and sulphur is added to water and stirred vigorously, common salt will dissolve in water but others will not. The solution is then filtered using a filter paper.

b)So from a mixture, containing ammonium chloride (or camphor), common salt and sand, ammonium chloride (or camphor) can be easily separated by the process of sublimation

c)By using evaporation and separating funnel process, we can separate the ground nut oil and common salt from the given mixture. ... Ground nut oil is left in the funnel. After this, put the beaker on the funnel. Water will evaporate and salt will be left behind as residue.

Answer 2

a) Sand is insoluble in both. When sand, common salt, and sulfur are added to water and stirred vigorously, common salt will dissolve in water but others will not. The solution is then filtered using filter paper. The filtrate containing common salt is subjected to evaporation to obtain salt.

b) Camphor can be separated using sublimation as it is a sublime, common salt and sand mixture that can be separated using evaporation and filtration respectively.

c) By using evaporation and separating funnel process, we can separate the groundnut oil and common salt from the given mixture. Ground nut oil is left in the funnel. After this, put the beaker on the funnel. Water will evaporate and salt will be left behind as residue.

Hope it helps!!!