AP EAMCET201726 Apr 2017Morning ShiftChemistryGeneral Organic ChemistryActual
The increasing order of acidity of the following carboxylic acids is
Options
- AIII < IV < II < I
- BII < III < IV < I
- CI < II < IV < III
- DIII < IV < I < II
Correct answer
D. III < IV < I < II
Step-by-step solution
(i) NO ₂ group increases the acidic nature due to - I effect. (ii) OCH ₃ and CH ₃ are electron donating groups (i.e., + I effect), thus decreases the acidic nature, but OCH ₃ will decrease acidic nature more than of CH ₃ group Hence, correct order is III < IV < I < II