MHT CET 202622 AprilEvening Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 22 April
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Alcohols Phenols and Ethers
MHT CET 2026 · 22 April · Evening Shift · Chemistry · Alcohols Phenols and Ethers
Which of the following compounds, when treated with acetic...
Which of the following compounds, when treated with acetic anhydride, forms aspirin?
Options
- ABenzoic acid
- B2-Hydroxybenzoic acid
- C2-Methylbenzoic acid
- DBenzene-1,2-dicarboxylic acid
Correct answer
B. 2-Hydroxybenzoic acid
Step-by-step solution
Aspirin is chemically known as acetylsalicylic acid.
It is prepared by the acetylation of salicylic acid, whose IUPAC name is 2-hydroxybenzoic acid.
When 2-hydroxybenzoic acid is treated with acetic anhydride in the presence of an acid catalyst, the phenolic hydroxyl group undergoes acetylation to form acetylsalicylic acid (aspirin) and acetic acid as a byproduct.
Therefore, 2-hydroxybenzoic acid forms aspirin when treated with acetic anhydride.
Answer: 2-Hydroxybenzoic acid
It is prepared by the acetylation of salicylic acid, whose IUPAC name is 2-hydroxybenzoic acid.
When 2-hydroxybenzoic acid is treated with acetic anhydride in the presence of an acid catalyst, the phenolic hydroxyl group undergoes acetylation to form acetylsalicylic acid (aspirin) and acetic acid as a byproduct.
Therefore, 2-hydroxybenzoic acid forms aspirin when treated with acetic anhydride.
Answer: 2-Hydroxybenzoic acid