1
Question
Which of the following compounds does not undergo mutarotation ?
Which of the following compounds does not undergo mutarotation ?
Open in App
Solution
The correct option is D Sucrose
Reducing sugars that exist in hemiacetal and hemiketal forms, mutarotation in aqueous solution. During mutarotation, the ring open upto give the open chain form which then recloses either in the inverted position or in the original position giving an equilibrium mixture of two anomers with a small amount of open chain form.
Thus, all reducing monosaccharides and disaccharides undergo mutarotation in aqueous solution. Among the given carbohydrates, only sucrose is a non-reducing sugar as in it the hemiacetal and hemiketal groups of glucose and fructose are linked together through O-atom and thus, not free.
Due to the absence of a free hemiacetal or hemiketal group, sucrose does not exhibit mutarotation.
Hence, option C is correct.
Reducing sugars that exist in hemiacetal and hemiketal forms, mutarotation in aqueous solution. During mutarotation, the ring open upto give the open chain form which then recloses either in the inverted position or in the original position giving an equilibrium mixture of two anomers with a small amount of open chain form.
Thus, all reducing monosaccharides and disaccharides undergo mutarotation in aqueous solution. Among the given carbohydrates, only sucrose is a non-reducing sugar as in it the hemiacetal and hemiketal groups of glucose and fructose are linked together through O-atom and thus, not free.
Due to the absence of a free hemiacetal or hemiketal group, sucrose does not exhibit mutarotation.
Hence, option C is correct.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
