Carbohydrates that are oxidized with Benedict's reagent are called reducing sugars,because they reduce the Cu²⁺ in Benedict's reagent to Cu⁺ during the reaction.

Question

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Reducing sugars are capable of donating electrons to other molecules because they have a free aldehyde or ketone group. When they react with Benedict's reagent, they reduce copper(II) sulfate (CuSO4) to copper(I) oxide (Cu2O), causing the solution to change color, which indicates the presence of reducing sugars.

Carbohydrates That Are Oxidized with Benedict's Reagent Are Called Reducing