Aldehydes, Ketones and Carboxylic Acids

Question

Arrange the following compounds in increasing order of their property as indicated:
CH3CH2CH(Br)COOH, CH3CH(Br)CH2COOH, (CH3)2CHCOOH, CH3CH2CH2COOH (acidic strength)

Answer

The compound having +I effect (electron donating group) will decrease the strength of the acids and groups having –I effect (electron withdrawing group) will increase the strength of the acids. In the given compounds the alkyl group has +I effect and Br- group has –I effect. Hence, the strength of the given acids increase as;

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