Question

7.what is the order of the method applied to separate the components of a mixture of salt sand and What is the order of the method ammonium chloride?

(1 Point)

a) dissolving in water, filtration, evaporation and sublimation

b) dissolving in water ,evaporation and sublimation

c) sublimation, dissolving in water, filtration and evaporation

d) moving a magnet, dissolving in water and sublimation


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Answer 1

Explanation:

Sand, common salt and ammonium chloride mixture is separated by sublimation, Alteration and ' evaporation. Heat ammonium chloride carefully as it is volatile. Fix a cotton plug at the end of the funnel so that vapours of ammonium chloride do not escape.

Answer 2

Sublimation is the process of conversion of solid into vapor.

Evaporation converts liquid into vapor.

The correct order of the methods to separate the components of a mixture of ammonium chloride $NH_4Cl$, common salt (NaCl) and sand is sublimation, dissolving in water, filtration, and evaporation.

As sublimation occurs, the sublimable ammonium chloride, and then, the mixture get dissolved in water. This dissolved mixture when passed through filter paper restricts the sand particles. The homogenous salt solution is then evaporated. In this process, water evaporates and the salt residue is left behind.

Option (1) is Incorrect

Dissolving in water, filtration, evaporation, and sublimation is not the correct procedure to separate the components of a mixture of ammonium chloride, common salt (NaCl) and sand.

Option (2) is Incorrect

The components of a mixture of ammonium chloride $NH_4Cl$

, common salt (NaCl) and sand are not separated by dissolving in water first.

Option (4) is Incorrect

Moving a magnet is not required as none of the components are influenced by magnetic lines of forces.

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