Q.

A student added aqueous chlorine to aqueous sodium bromide and the resulting mixture was shaken with an equal volume of trichloroethane.

Which diagram best represents the observation made

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Ans.

(4)

Cl2+2NaBrBr2+2NaCl

Cl2 oxidises Br- to Br2 in trichloroethane and is reddish brown in colour. Two layers are observed as trichloroethane is immiscible with water.