Which electron displacement effect explain the following correct orders of acidity of the carboxylic acids?

Which electron displacement effect explain the following correct order

1.	Which electron displacement effect explain the following correct orders of acidity of the carboxylic acids?
Answer» Solution :`CH_(3)CH_(2)COOH gt (CH_(3))_(2)CHCOOH gt (CH_(3))_(3) CCOOH` As the number of alkyl group increases, `+I` effect increase and it STRENGTHEN the `O-H` bond. i.e., `O-H` bond dissociation is very difficult. Therefore `+I` effect explain the correct ORDERS of ACIDITY of the CARBOXYLIC ACIDS.