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Benedict's quantitative reagent is a modification of qualitative aspects. It contains copper sulphate-sodium carbonate. It also contains potassium thiocyanate and small amount of potassium ferricyanate. The thiocyanate causes with the precipitation of white cuprous thiocyanate rather than red cupric oxide.
Benedict's Quantitative Solution is a test reagent used for detecting and quantitatively determining the amount of reducing sugars present in a substance.
Benedict’s when exposed to reducing sugars, the reactions undergone by Benedict’s reagent result in the formation of a brick-red precipitate, which indicates a positive Benedict’s test.
Benedict's Quantitative Solution contains copper(II) sulfate, sodium citrate, sodium carbonate, potassium thiocyanate, and potassium ferrocyanide. Each plays a role in the determination of reducing sugars:Copper(II) sulfate provides the copper(II) ions that are reduced by the reducing sugar.