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QJEEM18Ch4a4a: JEE Main 2018 Chemistry - Class 12 JEEM18Ch4a4a Solution: The increasing order of the acidity of the following carboxylic …

The increasing order of the acidity of the following carboxylic acids is :
JEE Main 2018 (Online) 15th April Evening Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 207 English

Multiple Choice Options

  • A I < III < II < IV
  • B IV < II < III < I
  • C II < IV < III < I
  • D III < II < IV < I

Step-by-Step Verified Solution

Electron withdrawing groups like −- Cl, −- CN, −- NO2 increases the acidity of substituted benzoic acids, whereas electron releasing groups like −- CH3, −- OH, −- OCH3, −- NH2 decreases the acidity.

Among −- NO2 and −- Cl, −- NO2 has stronger −- I effect than that of −- Cl.

So the correct order will be,

(III)   <   (II)   <   (IV)   <   (I)

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