Why is the Benedict reagent alkaline? Write down the chemical equation describing the reaction that has...
Why is the Benedict reagent alkaline? Write down the chemical equation describing the reaction that has occurred.
Homework Answers
Benedict's solution is prepared by copper (II) Sulphate, Sodium Carbonate , Sodium Citrate. Alkaline environment is provided due to the presence of sodium carbonate and the alkaline environment is given to favor the presence of the free aldehyde form by suppressing ring formation as because If the sugar exist in the ring form it can not react.
Reaction :
H-C(R)=O (Sugar) + 2Cu2+ + 5OH- (Benedict Reagent)= HO-C(R)=O (Carboxylic Acid) + Cu2O (copper I oxide) +3H2O
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