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In organic chemistry, Fehling's solution is a chemical reagent used to differentiate between water-soluble carbohydrate and ketone (>C=O) functional groups, and as a test for reducing sugars and non-reducing sugars, supplementary to the Tollens' reagent test. The test was developed by German chemist Hermann von Fehling in 1849. [1]
Hermann von Fehling (9 June 1812 – 1 July 1885) was a German chemist, famous as the developer of Fehling's solution used for estimation of sugar. Biography [ edit ]
The nature of the complex formed in Fehling's solution is [Cu(L-tartH-2) 2] 6-(tart = tartrate) Therefore, all hydroxyl groups are deprotonated and the ball and stick model showed in the article is false. Moreover, L-tartaric acid is used to prepare Fehling's solution, so the citation of the publication dealing with complex compounds of copper ...
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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]
January 2, 2025 at 8:18 AM The French Quarter is blocked by authorities after a terrorist attack in New Orleans, Louisiana, on January 1, 2025. (Emily Kask/AFP/Getty Images)
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Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2] For this reason it is essential to use multiple different tests to show all adulterants.