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JEE Main 201815 AprilEvening ShiftOnline

Exam: JEE Main
Year: 2018
Date: 15 April
Shift: Evening Shift
Mode: Online
Subject: Chemistry
Chapter: Carboxylic Acid Derivatives

JEE Main 2018 · 15 April · Evening Shift · Online · Chemistry · Carboxylic Acid Derivatives

The increasing order of the acidity of the following carboxylic...

The increasing order of the acidity of the following carboxylic acids is:

The increasing order of the acidity of the following carboxylic acids is:

Options

AIII $<$ II $<$ IV $<$ I
BI $<$ III $<$ II $<$ IV
CIV $<$ II $<$ III $<$ I
DII $<$ IV $<$ III $<$ I

Correct answer

A. III $<$ II $<$ IV $<$ I

Step-by-step solution

The increasing order of the acidity of the carboxylic acids is III

<

II

<

IV

<

I. In aromatic acids, electron withdrawing groups like

\mathrm{Cl},-\mathrm{CN},-\mathrm{NO}_2

increases the acidity, whereas electron releasing groups like

\mathrm{CH}_3,-\mathrm{OH},-\mathrm{OCH}_3,-\mathrm{NH}_2

decreases the acidity.

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