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  • Give simple chemical tests to distinguish between the following pairs of compounds. (iv) Benzoic acid and Ethyl benzoate

Q 12.13     Give simple chemical tests to distinguish between the following pairs of compounds.

        (iv)     Benzoic acid and Ethyl benzoate

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Both can be distinguish by sodium bicarbonate test, In this test, benzoic acid react with NaHCO_{3} to give brisk effervescence due to evolution of carbon dioxide (CO_{2}) but Ethyl benzoate does not.

Benzoic acid, being an acid gives a positive sodium bicarbonate test. It gives an effervescence of carbon dioxide gas upon reaction with sodium hydrogen carbonate. Whereas, ethyl benzoate does not react with sodium hydrogen carbonate and gives a negative sodium bicarbonate test.

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