Benedict’s reagent (often called Benedict’s qualitative solution or Benedict’s solution) is a chemical reagent and complex mixture of sodium carbonate, sodium citrate, and copper sulfate pentahydrate.It is often used in place of Fehling’s solution to detect the presence of reducing sugars. The presence of other reducing substances also gives a positive result.Such tests that use this reagent are called the Benedict’s tests. A positive test with Benedict’s reagent is shown by a color change from clear blue to brick-red with a precipitate
Potassium hydroxide, also known as _lye_ is an inorganic compound with the chemical formula KOH. Also commonly referred to as caustic potash, it is a potent base that is marketed in several forms including pellets, flakes, and powders. It is used in various chemical, industrial and manufacturing applications.
Sodium benzoate is a substance which has the chemical formula C₆H₅COONa. It is a widely used food preservative, with an E number of E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
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Sodium Hydroxide 
Nitric Acid 
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