Question

The least acidic among the following compounds: 

is: 
 

• A. M
• B. N
• C. O
• D. P

Hint:

When comparing acidity, remember that sulfonic acids are typically stronger acids than carboxylic acids, and carboxylic acids are stronger than phenols.

Answer 1

The Correct Option is A

In this question, we are comparing the acidic strengths of four different compounds. - M: The compound with the methyl ester group (-COOH) attached to the carboxylic group is the least acidic. - N: The carboxylic acid group (-COOH) is more acidic than the methyl ester group.
- O: Phenols are weaker acids than carboxylic acids, so this compound will be slightly more acidic.
- P: Sulfonic acids are stronger acids compared to carboxylic acids or phenols, so this compound will be the most acidic.
Thus, M is the least acidic compound. Final Answer: M.