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Sucrose is dextrorotatory but the mixture obtained after hydrolysis is laevorotatory. Explain.

Options

  1. AHydrolysis of sucrose reverses the direction of polarized light.
  2. BHydrolysis of sucrose produces equal amounts of dextrorotatory and laevorotatory compounds.
  3. CHydrolysis of sucrose forms glucose and fructose, both of which are laevorotatory.
  4. DOn hydrolysis sucrose (dextrorotatory), gives glucose (dextrorotatory, + 52.5°) and fructose (laevorotatory, –

Correct answer

D. On hydrolysis sucrose (dextrorotatory), gives glucose (dextrorotatory, + 52.5°) and fructose (laevorotatory, –

Step-by-step solution

Correct Option is : (D) On hydrolysis sucrose (dextrorotatory), gives glucose (dextrorotatory, + 52.5°) and fructose (laevorotatory, – 92.4°). Since laevorotation of fructose is more than the dextrorotation of glucose, the mixture is laevorotatory.

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