1.

Which of the following acids on heating loses a molecul of H_(2)O to form an alpha,beta-unsaturated acid?

Answer»

`CH_(3)CHOHCOOH`
`HOCH_(2)COOH`
`CH_(3)CHOHCH_(2)COOH`
`HOCH_(2)CH_(2)CH_(2)COOH`

Solution :`beta`-HYDROXY acids on heating lose a molecule of `H_(2)O` to FORM `alpha,beta`-unsaturated acids, i.e., option (c) is correct.
`CH_(3)overset(beta)(C)HOHoverset(alpha)(C)H_(2)COOH overset(heat)to CH_(3)CH=CHCOOH+H_(2)O`


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