Question

What are X and Y respectively in the following reactions?

• A. \( H^+, H^+ \)
• B. \( H^+, \text{Pyridine} \)
• C. \( \text{Pyridine}, H^+ \)
• D. \( \text{Pyridine}, \text{Pyridine} \)

Hint:

For esterification reactions:
- Carboxylic acids require an acid catalyst (\( H^+ \)).
- Acid chlorides require a base (e.g., pyridine) to neutralize HCl formed.

Answer 1

The Correct Option is B

Step 1: Identify the Reaction Types
- The first reaction involves esterification of benzoic acid with ethanol, which requires an acid catalyst (\( H^+ \)).
- The second reaction involves esterification of benzoyl chloride with ethanol, where pyridine is used as a base to neutralize HCl. Step 2: Explanation
- \( X = H^+ \) (for acid-catalyzed esterification of benzoic acid)
- \( Y = \text{Pyridine} \) (as a base for benzoyl chloride reaction)
Thus, the correct answer is \( H^+, \text{Pyridine} \). \bigskip