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h2so4 can reduce fehling solution
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∙ 11y ago
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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.
Why does the fehlings solution turn red?
When Fehling's solution is added to an aldehyde it turns brick red
Why is it important that fehlings solution be freshly prepared?
Fehling's solution must be freshly prepared because there is a tendency for it to oxidize if not used right away
What is the product obtained by combining fehlings a and fehlings b solution?
When the two Fehling Solutions A and B are mixed, a deep blue solution containing a complex cupric ion is formed. On interaction with reducing compounds such as aldehydes or sugars, the copper is reduced to the univalent stage, and a red, yellow, or yellowish green precipitate is formed.
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.
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 does presence of an acid in a water solution affect the pH of the solution?
The presence of an acid reduces the pH.
How does the presence of an acid in a water solution affects the pH of the solution?
The presence of an acid reduces the pH.
How does the presence of an acid in a water solution affect the pH of solution?
The presence of an acid reduces the pH.
How does a the presence of an acid in a water solution affect the pH of the solution?
The presence of an acid reduces the pH.
How does the presence of an acid in water solution affect the pH of solution?
The presence of an acid reduces the pH.
How does the presence of an acid in water solution affect the pH of a solution?
The presence of an acid reduces the pH.
How does the presence of an acid in a water solution affect of pH of the solution?
The presence of an acid reduces the pH.
What happens to aldehyde when it reacts with fehlings solution or tollens solution?
Aldehyde are oxidised to the corresponding carbonic acid by F.'s or T.'s agents. Ketone can not be oxidised.
How does the presence of an acid in water affect the pH of a solution?
The presence of an acid reduces the pH.
How does the presence of an acidic in a water solution affect the pH of the solution?
The presence of an acid reduces the pH.
What is fehlings solution?
Fehling solution "A" is copper sulphate solution and Fehling solution "B" is a solution of sodium potassium tartrate and NaOH.
