Question

How many moles of acetic acid are obtained in the reaction when one mole glucose is treated with excess acetic anhydride?

• A. 5 moles
• B. 3 moles
• C. 4 moles
• D. 2 moles

Hint:

In esterification reactions, be sure to follow the stoichiometry, especially when dealing with acetic anhydride and glucose.

Answer 1

The Correct Option is A

Step 1: Understanding the reaction.
When glucose reacts with excess acetic anhydride, it undergoes esterification to form acetic acid. The reaction produces 5 moles of acetic acid from 1 mole of glucose.
Step 2: Analyzing the options.
(A) 5 moles: Correct — 1 mole of glucose reacts with excess acetic anhydride to produce 5 moles of acetic acid.
(B) 3 moles: Incorrect, this is not the stoichiometry of the reaction.
(C) 4 moles: Incorrect, the reaction produces 5 moles of acetic acid, not 4.
(D) 2 moles: Incorrect, 2 moles of acetic acid is not the correct product.
Step 3: Conclusion.
The correct answer is (A) 5 moles.