Question

why doesn't not glucose react with sadium bicarbonate?

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Answer 1

Answer:

Glucose consists of an aldehyde group. However, it does not undergo reaction with sodium hydrogen sulphite in order to form bisulphite addition products. This is due to the fact that this reaction occurs in the presence of a free aldehyde group, but there is no free $ - CHO$ group present in the structure of glucose.

Explanation:

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Answer 2

Answer:

A D-Glucose isn’t an aldehyde because of the ring formation between the fifth and the first carbon. It’s now a hemi-acetal which are not carbonyl compounds. So, it does not have a free aldehydic group. Hence, no reaction!