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Q. On gently warming, which of the following acids undergo decarboxylation?

Aldehydes Ketones and Carboxylic Acids

Solution:

Upon gently heating $\beta$-keto acids, gem- dicarboxylic acids lose $CO _2$.image through is a $\beta$-keto acid, does not lose $CO _2$ since $- COOH$ group is present at hridge and produces unstahle transition stăte or intermediatè (carbanion) after losing $CO _2$