Question

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what is Fehling reagent? ​

Answer 1

Answer:

Fehling's solution is a chemical reagent used to differentiate between water-soluble carbohydrate and ketone 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.

Explanation:

Fehling’s solution is prepared just before its actual use. It is done by mixing equal volumes of two previously made solutions, a deep blue Fehling’s solution A, which is 70 grams of cupric sulphate pentahydrate per litre of solution and a colourless Fehling’s solution B, which is about 350 grams of Rochelle salt (potassium sodium tartrate tetrahydrate) and 100 grams of sodium hydroxide per litre of the solution.