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Fehling's test is used to differentiate between aldehyde and ketones group. An aldehyde group will react with Fehling's reagent to give cuprous oxide resulting in a red precipitate. A Ketone group will not react with Fehling's reagent.
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Which is more sensitive test fehlings test or Benedicts test?
benedicts test
Are substance considered reducing fehlings test also the substance reducing in benedicts test?
yes.
explain using sample equation, the application of benedicts tollens and fehlings test in hospital?
wrt
After hydrolysis did sucrose give a positive test with fehlings test why orwhy not?
After hydrolysis sucrose did give a positive test. It reduces sugar that has hemiketal and hemiaetal in it.
What is a positive result for the fehlings test?
Fehlins test is done to identify aldehides. Fehlins solution is used for this test. If aldehides are added to this soluton, a red precipitate is formed.
Which is more sensitive test fehlings test or Benedicts test?
benedicts test
What is the fehlings test of glucose?
ulo nyo!!
Which compound gives positive Fehlings test?
Fehling test is used for reducing sugars.
Are substance considered reducing fehlings test also the substance reducing in benedicts test?
yes.
explain using sample equation, the application of benedicts tollens and fehlings test in hospital?
wrt
After hydrolysis did sucrose give a positive test with fehlings test why orwhy not?
After hydrolysis sucrose did give a positive test. It reduces sugar that has hemiketal and hemiaetal in it.
What is a positive result for the fehlings test?
Fehlins test is done to identify aldehides. Fehlins solution is used for this test. If aldehides are added to this soluton, a red precipitate is formed.
Why the oxidation of formic acid gives red precipitate while the oxidation of acetic acid not?
I think you are referring to the test using Fehlings solution. Fehlings solution oxidises aldehydes and ketones and formic acid and is in turn reduced. The red precipitate is the copper(I) oxide formed by reduction of the copper(II) complex found in Fehlings solution. Acetic acid is not readily oxidised and so there is no precipitate. See link for more information on what the complex is in Fehlings solution and how it is prepared.
How do you distinguish between acetic acid and formic acid?
Formic acid gives positive result in both tollen's test and fehlings test. but acetic acid doesnot.
Does hcooh undergo fehlings reaction?
Formic acid (HCOOH - methanoic acid) also gives a positive Fehling's test result. This is because it is readily oxidizable to carbon dioxide and water.
What other test material which can be used to replace Benedict's Solution in glucose test in food?
Barfoed's solution. Glucose as a monosaccharide and a reducing sugar would react positive to Barfoed's Test. Fehlings test (Solutions A and B) tests for reducing sugars but was replaced by Benedict's as a) less hazardous and b) you don't have to mix two solutions.
Can a one to one function not be a function?
"y = f(x) is a function if it passes the vertical line test. It is a 1-1 function if it passes both the vertical line test and the horizontal line test. " - In order to be a one-to-one function, it first has to BE a function and pass the vertical line test. For example, a relation on a graph like a circle that does not pass the vertical line test is not function nor one-to-one.
