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CHM 102 Practice Questions Objective Question
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Question

An aqueous solution of glucose behaves as an aldehyde because .
Options
A it is hydrolyzed by water to the free aldehyde
B it is a ketone, but is in equilibrium with the aldehyde form
C glucose is actually a cyclic aldehyde
D its cyclic hemiacetal, the predominant form, is in equilibrium with the free aldehyde form
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Glucose exists predominantly as a cyclic hemiacetal (pyranose form), but in solution it is in equilibrium with the open-chain aldehyde form. It is this open-chain form that gives aldehyde reactions.

Hint

How does glucose show aldehyde properties?

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 1587 of 1999
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