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CBSE Class 10 Answered

Give a test for experimentally distinguishing between an alcohol and a carboxylic acid and describe how these tests are performed?
Asked by Eshwer | 17 Mar, 2017, 12:22: AM
answered-by-expert Expert Answer
1) On addition of carbonates or bicarbonates to an aqueous solution of carboxylic acid, brisk effervescence is observed.
Metal carbonates/Bicarbonates + Carboxylic acid → Salt + Water + Carbon dioxide
Alcohol does not give this test.
 
2) On addition of sodium metal to alcohol, hydrogen gas is evolved.
Example:
2CH3CH2OH + 2Na → 2CH3CH2ONa + H2
Carboxylic acid does not give this test.
Answered by Prachi Sawant | 17 Mar, 2017, 09:29: AM

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