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Give scientific reasons: Hydrolysis of sucrose is called inversion. - Chemistry

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Short Note

Give scientific reasons:

Hydrolysis of sucrose is called inversion.

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Solution

1) Sucrose (C12H22O11) is dextrorotatory (+66.5°). On hydrolysis with dilute acid or an enzyme called invertase, sucrose gives equimolar mixture of D-(+)-glucose and D-(–)-fructose.

\[\ce{\underset{\text{Sucrose}}{C12H22O11} + H2O ->[H+][\triangle]\underset{\text{D-(+)-Glucose}}{C6H12O6} + \underset{\text{D-(–)-Fructose}}{C6H12O6}}\]

2) Since the laevorotation of fructose (–92.4°) is larger than the dextrorotation of glucose (+52.7°), the hydrolysis product has net laevorotation.
Hence, hydrolysis of sucrose is also called inversion of sucrose.

Concept: Biomolecules in the Cell - Carbohydrates
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Balbharati Chemistry 12th Standard HSC for Maharashtra State Board
Chapter 14 Biomolecules
Exercises | Q 2.4 | Page 320
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