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Fructose forms: A. a five-membered cyclic hemiacetal. B. a six-membered cyclic hemiacetal. C. a six-membered lactone. D. a five-membered lactone. E. none of these
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Fructose forms: A. a five-membered cyclic hemiacetal. B. a six-membered cyclic hemiacetal. C. a six-membered lactone. D. a five-membered lactone. E. none of these

User Ben Grossmann
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Answer:

A. a five-membered cyclic hemiacetal.

Step-by-step explanation:

Fructose is a hexose sugar with a ketone group unlike glucose which has an aldehyde group.

The fructose also forms a cyclic structure due to formation of hemiacetal bond however unlike glucose the cyclic structure formed is a five membered ring.

The hemiacetal bond is formed when an alcohol reacts with a carbonyl group.

The structure of fructose is shown in the figure.

Fructose forms: A. a five-membered cyclic hemiacetal. B. a six-membered cyclic hemiacetal-example-1
User YaBoyQuy
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