Question

Explain the purpose of the following steps: a) using a drying tube containing moist cotton wool...

Explain the purpose of the following steps:

a) using a drying tube containing moist cotton wool

b) washing the organic layer with water

c) washing the organic layer with brine

d) shaking the organic layer with sodium sulfate.

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Answer #1

(a) using a drying tube containg moist cotton wool is to remove any kind of moisture present tube.

(b) Washing organic layer with water is to emoves all water soluble impurties.

(c) washing the organic layer with brine solution is to remove any kind of inorganic impurties.

(d) shaking organic layer with sodium sulfate is to remove all water present in the solution.Since   sodium sulfate absorbed all water and it has been widely used as drying agents.

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