Write preparation of glucose from sucrose.
Q.10 Write preparation of glucose from sucrose.
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Answer: By acid hydrolysis (inversion) of sucrose.
Sucrose is boiled with dilute HCl or H2SO4 in alcoholic solution; it hydrolyses into equal amounts of glucose and fructose.
\(\mathrm{\underset{sucrose}{C_{12}H_{22}O_{11}} + H_2O \xrightarrow[\Delta]{H^+} \underset{glucose}{C_6H_{12}O_6} + \underset{fructose}{C_6H_{12}O_6}}\)
Glucose being less soluble in alcohol crystallises out first on cooling, while fructose stays in solution.
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· 28 Oct 2026
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