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JEE Main 201910 JanuaryMorning Shift
Exam
JEE Main
Year
2019
Date
10 January
Shift
Morning Shift
Subject
Chemistry
Chapter
Carboxylic Acid Derivatives

JEE Main 2019 · 10 January · Morning Shift · Chemistry · Carboxylic Acid Derivatives

The decreasing order of ease of alkaline hydrolysis for the...

The decreasing order of ease of alkaline hydrolysis for the following esters is
The decreasing order of ease of alkaline hydrolysis for the following esters is

Options

  1. AIII>II>IV>IIII > II > IV > I
  2. BIII>II>I>IVIII > II > I > IV
  3. CIV>II>III>IIV > II > III > I
  4. DII>III>I>IVII > III > I > IV

Correct answer

B. III>II>I>IVIII > II > I > IV

Step-by-step solution

The rate of hydrolysis will depend on how likely a molecule is to accepting OH−O{H}^{-} ions. Rate of hydrolysis α−M\alpha - M effect or −I- I of ester. −M>−I- M > - I. −NO2- N{O}_{2} is a strong EWGEWG (Electron withdrawing group),−Cl- Cl is a weak EWGEWG and OCH3OC{H}_{3} is an EDGEDG(Electron donating group).
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