Solution contains copper sulfate that reacts with sugar to form copper oxide, a reddish brown powder. The more red the solution looks, the more copper oxide there is, and therefore the more sugar is in the solution.
Benedict's quantitative reagent contains potassium thicyanate and is used to determine how much reducing sugar is present. This solution forms a copper thiocyanate precipitate which is white and can be used in a titration. The titration should be repeated with 1% glucose solution instead of the sample for calibration. A positive test with Benedict's reagent is shown by a colour change from clear blue to a brick-red precipitate. One litre of Benedict's reagent can be prepared from 100 g of anhydrous sodium carbonate, 173 g of sodium citrate and 17.3 g of copper(II) sulphate pentahydrate. It is often used in place of Fehling's solu Benedict's reagent. Benedict's contains blue copper sulphate (Cu S O. When Benedict's is used as a test for the prescience of reducing sugars in food, the food sample is dissolved in water and about 5ml of the sample solution is added to 5ml of Benedict's qualitative reagent.  Benedict's reagent (often sold as Benedict's Qualitative Solution [1] or Benedict's Solution) is a chemical reagent named after an American chemist, Stanley Rossiter Benedict. A positive test with Benedict's reagent is shown by a colour change from clear blue to a brick-red precipitate. One litre of Benedict's reagent can be prepared from 100 g of anhydrous sodium carbonate, 173 g of sodium citrate and 17.3 g of copper(II) sulphate pentahydrate. It is often used in place of Fehling's solution Presence of starch. Polymers of reducing sugars. It's used to test for the presence of glucose in a patients urine-a standard test for diabetes. starch Benedict's reagent is … used as a test for the presence of all monosaccharides, and generally also reducing sugars. These include glucose, galactose, mannose, lactose and maltose. Benedict's solution. Benedict's solution, deep-blue alkaline solution used to test for the presence of the aldehyde functional group, - CHO. The substance to be tested is heated with Benedict's solution; formation of a brick-red precipitate indicates presence of the aldehyde group. Since simple sugars (e.g., glucose) give a positive test, the solution is used to test for the presence of glucose in urine, a symptom of diabetes. One liter of Benedict's solution contains 173 grams sodium citrate, 100 grams sodium carbonate, and 17.3 grams cupric sulfate pentahydrate.  Simple Answer. Benedict's solution contains copper sulfate that reacts with sugar to form copper oxide, a reddish brown powder. The more red the solution looks, the more copper oxide there is, and therefore the more sugar is in the solution. More Complicated Answer. Reducing sugar is oxidized when heated with Benedict's solution, which means the sugar looses electrons. Benedict's solution contains copper sulphate. The copper 2+ ions in copper sulfate gain an electron that the sugar has lost and become copper 1+ ions-this is called reduction. The copper ions immediately react with oxygen to form copper oxide which forms a reddish brown precipitate Benedict’s solution reacts with reducing sugars on heating and reduces the Cu(II) ion to Cu(I) producing a precipitate of red copper oxide. The resulting colour change depends on the type and concentration of sugar, so this test has been used semi-quantitatively to indicate approximate concentrations.  Since simple sugars (e.g., glucose) give a positive test, the solution is used to test for the presence of glucose in urine, a symptom of diabetes. One liter of Benedict's solution contains 173 grams sodium citrate, 100 grams sodium carbonate, and 17.3 grams cupric sulphate pentahydrate. A positive test with Benedict's reagent is shown by a colour change from clear blue to a brick-red precipitate. One litre of Benedict's reagent can be prepared from 100 g of anhydrous sodium carbonate, 173 g of sodium citrate and 17.3 g of copper(II) sulphate pentahydrate. It is often used in place of Fehling's solution Benedict’s reagent is a solution of copper sulfate, sodium carbonate and sodium citrate in water. It is used to detect the presence of certain types of carbohydrate known as reducing sugars. Reducing sugars react with the copper sulfate in Benedict’s reagent, reducing it to copper I oxide, an insoluble, reddish colored compound that forms a precipitate.
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how does benedict's solution work