What are the hydrolysis products of (i) ...

NCERT Class XII Chemistry
Chapter - Biomolecules
Questions with Solutions

Question : 7 of 33

Marks: +1, -0

What are the hydrolysis products of (i) sucrose and (ii) lactose ?

Solution:

(i) Sucrose on hydrolysis gives one unit of glucose and one unit of fructose.

\begin{array}{c c c c c c c} \mathrm{C}_{12}\mathrm{H}_{22}\mathrm{O}_{11} & + & \mathrm{H}_2\mathrm{O} & \xrightarrow{\mathrm{Invertase}} & \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 & + & \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 \\ \mathrm{Sucrose} & & & & \mathrm{Glucose} & & \mathrm{Fructose} \end{array}

(ii) Lactose on hydrolysis with dilute acids yields an equimolar mixture of D-glucose and D-galactose.

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