Question

Write the chemical reaction for the preparation of glucose from sucrose. Write structure of D-ribose.

Hint:

Hydrolysis of sucrose gives glucose and fructose, while D-ribose is a pentose sugar with a characteristic aldehyde group.

Answer 1

1. Preparation of Glucose from Sucrose: Sucrose (a disaccharide) can be hydrolyzed to give glucose and fructose. This is a simple hydrolysis reaction that requires an acid or enzyme for catalysis. The chemical reaction is: \[ \text{C}_12\text{H}_22\text{O}_{11} \xrightarrow{\text{acid}} \text{C}_6\text{H}_12\text{O}_6 + \text{C}_6\text{H}_12\text{O}_6 \] Sucrose (\( \text{C}_12\text{H}_22\text{O}_{11} \)) breaks down into glucose (\( \text{C}_6\text{H}_12\text{O}_6 \)) and fructose (\( \text{C}_6\text{H}_12\text{O}_6 \)) under acidic conditions. 2. Structure of D-Ribose: D-Ribose is a five-carbon monosaccharide (pentose sugar) with an aldehyde group. Its structure is: \[ \text{HOCH}_2\text{(CHOH)}_3\text{CHO} \] The structure shows the hydroxyl groups on the second, third, and fourth carbon atoms, and an aldehyde group on the first carbon.