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How can you separate benzoic acid and ni...

How can you separate benzoic acid and nitro benzene from their mixture by the technique of extraction using an approprite chemical reagent?

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The mixture is shaken with a dilute sodium bicarbonate solution when benzoic acid gets converted to sodium benzoate and dissolves in water leaving nitrobenzene behind. The mixture is extracted with ether or chloroform when nitrobenzene goes into the organic layer. After separating the organic layer, it is distilled to get nitrobenzene. The aqueous layer is acidified with dilute HCI when benzoic acid gets precipitated. It is obtained by filtration.
`C_(6)H_(5)COOH+NaHCO_(3)tounderset("Sodium benzene (Soluble)")(C_(6)H_(5)COONa)+CO_(2)+H_(2)O`
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