Question
Give any two reactions of glucose to show the presence of an aldehyde group.
Solution
(i) Glucose reacts with hydroxylamine to form glucose oxime
Glucose reacts with hydrogen cyanide to form cyanohydrin.
These reaction confirm the presence of a carbonyl group (>C=O) in glucose.
ii) Glucose gets oxidised to six carbon carboxylic acid (gluconic acid) on reaction with a mild oxidising agent like bromine water. This indicates that the carbonyl group is present as an aldehydic group.
Glucose reacts with hydrogen cyanide to form cyanohydrin.
These reaction confirm the presence of a carbonyl group (>C=O) in glucose.
ii) Glucose gets oxidised to six carbon carboxylic acid (gluconic acid) on reaction with a mild oxidising agent like bromine water. This indicates that the carbonyl group is present as an aldehydic group.
