Question

The following species are involved in the formation of an ester from a carboxylic acid in the presence of acid. The correct sequence of formation of these species is

• A. 2,1,4,3
• B. 4,1,2,3
• C. 1,4,3,2
• D. 2,3,1,4

Answer 1

Answer: (B)

$R - COOH + HOR' \ce{->[Conc. H_2SO_4]} R - COOR' + H_2O$

Mechanism

Step - I



Step - II



Step - III



Step -IV



Step -V



Step - VI