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fehling's solution is dark blue at room temperature

"Fehling's solution" is prepared by dissolving separately 34'639 grammes of copper sulphate, 173 grammes of Rochelle salt, and 71 grammes of caustic soda in water, mixing and making up to l000 ccs.; 10 ccs. of this solution is completely reduced by o 05 grammes of hexose

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Why are fehling solution A and B kept separately?

fehling a is copper sulphate and fehling b is alkaline solution of sodium pottasium tartarate


What is the composition of fehling's solution?

Fehling's solution is made up of two separate solutions: Fehling's A (copper sulfate solution) and Fehling's B (potassium sodium tartrate and sodium hydroxide solution). When combined in equal parts, these solutions are used to test for the presence of reducing sugars like glucose in a chemical sample.


What is fehlings solution?

Fehling solution "A" is copper sulphate solution and Fehling solution "B" is a solution of sodium potassium tartrate and NaOH.


Does formalin give positive Fehling's solution test?

Formalin gives a positive Fehling's solution test.


The acid which reduces Fehling's solution is?

The acid that reduces Fehling's solution is ascorbic acid (vitamin C). It causes the blue solution to turn into a brick-red precipitate of cuprous oxide.


Does the starch reduce the fehling's solution?

No, starch does not reduce Fehling's solution. Starch is a polysaccharide composed of glucose molecules linked together, whereas Fehling's solution is a complex of copper sulfate, sodium hydroxide, and potassium sodium tartrate used to test for the presence of reducing sugars. Starch is not a reducing sugar and therefore will not react with Fehling's solution.


Can I replace Fehling solution with Benedict's solution?

Yes, these solutions are interchangeable.


Why do you have to keep fehling's A with fehling'a B?

Fehling's A and Fehling's B are used together in the Fehling's test to detect the presence of reducing sugars, such as glucose. Fehling's A is a copper(II) sulfate solution, while Fehling's B is a complex solution of potassium sodium tartrate and sodium hydroxide. They work together to oxidize the sugar, causing a color change that indicates the presence of a reducing sugar.


What chemical formula for Fehlings reagent?

The Fehling A solution contain copper sulfate.The Fehling B solution contain sodium potassium tartrate and sodium hydroxide.


What is the composition of fehling's solution and what are its functions?

The function of Fehling's testing is to detect aldehydes. There are 2 solutions necessary. The chemical composition is 7 g CuSO4.5H2O dissolved in distilled water containing 2 drops of dilute sulfuric acid and 35g of potassium tartrate and 12g of NaOH in 100 ml of distilled water.


What has the author Winford Lee Lewis written?

Winford Lee Lewis has written: 'On the action of Fehling's solution on malt sugar ..' -- subject(s): Malt sugar, Fehling's solution


What has the author Ernest Anderson written?

Ernest Anderson has written: 'Rachel Outgrows the Easter Bunny' 'On the action of Fehling's solution on galactose ..' -- subject(s): Galactose, Fehling's solution