D-glucose and D-fructose can be differentiate | vedclass

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Question

(D) -glucose reacts with bromine water $(Br_2 / H_2O)$ to form $D$-gluconic acid,which is an oxidation reaction.$D$-fructose does not react with bromi

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$Br_2 / H_2O$

Vedclass · Answer

(D) -glucose reacts with bromine water $(Br_2 / H_2O)$ to form $D$-gluconic acid,which is an oxidation reaction.$D$-fructose does not react with bromine water because it is a ketone and is not easily oxidized under these mild conditions.Fehling solution,Tollens reagent,and Benedict test all give positive results for both $D$-glucose and $D$-fructose due to the presence of an $\alpha$-hydroxy ketone group in fructose which tautomerizes to an aldose in basic medium.

$D$-glucose and $D$-fructose can be differentiated by

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