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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(II) sulfate pentahydrate. [1] It is often used in place of Fehling's solution to detect the presence of reducing sugars and other reducing substances. [2]
Download as PDF; Printable version; ... For this reason it is essential to use multiple different tests to show all adulterants. ... Benedict's Fehling's: Secondary ...
Reducing form of glucose (the aldehyde group is on the far right). A reducing sugar is any sugar that is capable of acting as a reducing agent. [1] In an alkaline solution, a reducing sugar forms some aldehyde or ketone, which allows it to act as a reducing agent, for example in Benedict's reagent.
Citric acid is used as an odorless alternative to white vinegar for fabric dyeing with acid dyes. Sodium citrate is a component of Benedict's reagent, used for both qualitative and quantitative identification of reducing sugars. [39] Citric acid can be used as an alternative to nitric acid in passivation of stainless steel. [40]
A colorimeter is a device used to test the concentration of a solution by measuring its absorbance of a specific wavelength of light. To use this device, different solutions must be made, and a control (usually a mixture of distilled water and another solution) is first filled into a cuvette and placed inside a colorimeter to calibrate the machine.
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[citation needed] The pH range of a solution of 5 g/100 ml water at 25 °C is 7.5 to 9.0. It is added to many commercially packaged dairy products to control the pH impact of the gastrointestinal system of humans [ citation needed ] , mainly in processed products such as cheese and yogurt, although it also has beneficial effects on the physical ...