whhat is the chemical composition of fehling's reagent?
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Answer / biomaster
Fehling's reagent consists of two solutions.
solution A contains 7% CUSO4 and solution B contains 25%KOH
and 35% sodium potassium tartarate.
When the two solutions are mixed in equal amounts a clear
blue solution results for the tartrate forms a soluble
complex with the copperhydroxide produced.this solution is
widely used as an oxidising agent preferably in
quantitative sugar determinations.
| Is This Answer Correct ? | 239 Yes | 54 No |
Answer / debjit dutta
The composition of fehling's reagent are :
copper sulphate-CuSO4 [fehling A], sodium or potassium
hydroxide-NAOH or KOH and Potassium sodium tartarate {KNa
(C4H4O6).4H2O} [fehling B], also called Rochelle salt.
Here in the fehling test, the copper from CUSO4 in the
reactant is reduced from +II state to +I state by the
aldehyde, and that aldehyde is oxidised to its
corresponding carboxylic acid.
The copper in the product is changed to CU2O which is red
ppt. in nature, giving positive fehling test. But ketones
are resistant to fehling test.
| Is This Answer Correct ? | 73 Yes | 24 No |
Answer / fisa
The test was devised by German chemist Herman von Fehling.
Fehling's reagent consists of two solutions.
Fehling A and Fehling B .Fehling A contains CUSO4.5 H20 and
Fehling B contains alcoholic sodium / potassium tartarate.
When the two solutions are mixed in equal amounts a clear
blue solution results for the tartrate forms a soluble
complex with the copperhydroxide produced.this solution is
widely used as an oxidising agent preferably in
quantitative sugar determinations.
| Is This Answer Correct ? | 81 Yes | 37 No |
Answer / king
It is made up 2 components Fehling's A whch is CUSO4 And Fehling's B whch is Sodium potassium tartarate
| Is This Answer Correct ? | 5 Yes | 2 No |
Answer / haseeb
an aqueous solution of copper ii sulphate ,sodium hydroxide and potassium tartarate used to test for ther prescence of sugars and aldehydes in a substance ,such as urine
| Is This Answer Correct ? | 4 Yes | 14 No |
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