Hydrolysis of sucrose with dilute aqueous sul | vedclass

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Question

(A) Sucrose undergoes hydrolysis in the presence of dilute aqueous sulphuric acid to produce an equimolar mixture of $D-(+)$-glucose and $D-(-)$-fruct

Vedclass · Accepted Answer

$1: 1$ $D-(+)$-glucose; $D-(-)$-fructose

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(A) Sucrose undergoes hydrolysis in the presence of dilute aqueous sulphuric acid to produce an equimolar mixture of $D-(+)$-glucose and $D-(-)$-fructose.$C_{12}H_{22}O_{11} + H_2O$ $\xrightarrow{H_2SO_4} C_6H_{12}O_6 (D-(+)	ext{-glucose}) + C_6H_{12}O_6 (D-(-)	ext{-fructose})$This process results in a $1: 1$ molar ratio of the two monosaccharides.Since the specific rotation of $D-(-)$-fructose $(-92.4^{\circ})$ is greater in magnitude than that of $D-(+)$-glucose $(+52.7^{\circ})$,the resulting mixture is laevorotatory,which is why the process is often called the inversion of cane sugar.

Hydrolysis of sucrose with dilute aqueous sulphuric acid yields

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