Question

The reaction of glucose with acetic anhydride confirms the presence of how many hydroxy groups in glucose?

• A. 5.0
• B. 5
• C. 5.00

Answer 1

Answer: (A), (B), (C)

The reaction of glucose with $(C{H}_{3}CO{)}_{2}O$ gives glucose pentaacetate, which has five acetyl group in the structure. This reaction also proves that all the $5OH$ groups are present at different carbon atoms, because of the stable nature of glucose.