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

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(D) -glucose is an aldose (contains an aldehyde group),while $D$-fructose is a ketose (contains a ketone group).$Br_2/H_2O$ (bromine water) acts as a

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$Br_2/H_2O$

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(D) -glucose is an aldose (contains an aldehyde group),while $D$-fructose is a ketose (contains a ketone group).$Br_2/H_2O$ (bromine water) acts as a mild oxidizing agent.It oxidizes the aldehyde group of $D$-glucose to gluconic acid,but it does not oxidize the ketone group of $D$-fructose.Therefore,$Br_2/H_2O$ can be used to differentiate between them.Fehling solution,Tollens reagent,and Benedict test all give positive results for both aldoses and ketoses due to the tautomerization of fructose into glucose in alkaline media.

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

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