Question:easy
Identify the product when glucose reacts with bromine water.
Identify the product when glucose reacts with bromine water.
Show Hint
Bromine water oxidises only the aldehyde group of glucose to a carboxylic acid.
Updated On: Oct 1, 2026
- Saccharic acid
- Cyanohydrin
- Gluconic acid
- Nucleic acid
Show Solution
The Correct Option is C
Solution and Explanation
Step 1: Approach
Decide how strong the oxidant is and which group of glucose can be attacked.
Step 2: Reasoning
Bromine water is mild, so it oxidises only the most easily oxidised group, the aldehyde. The CH$_2$OH end survives. So the product has one carboxylic acid group and five hydroxyl groups: gluconic acid.
Step 3: Conclusion
Saccharic acid needs both ends oxidised with nitric acid, so the answer is gluconic acid, option (C).
Final Answer:
Bromine water turns the CHO group of glucose into COOH, giving gluconic acid, option (C). \[ \boxed{\text{Gluconic acid}} \]
Decide how strong the oxidant is and which group of glucose can be attacked.
Step 2: Reasoning
Bromine water is mild, so it oxidises only the most easily oxidised group, the aldehyde. The CH$_2$OH end survives. So the product has one carboxylic acid group and five hydroxyl groups: gluconic acid.
Step 3: Conclusion
Saccharic acid needs both ends oxidised with nitric acid, so the answer is gluconic acid, option (C).
Final Answer:
Bromine water turns the CHO group of glucose into COOH, giving gluconic acid, option (C). \[ \boxed{\text{Gluconic acid}} \]
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