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A positive test for phenols using ferric chloride is recognized by the formation of a colored complex. When phenols react with ferric chloride, a deep purple or blue color indicates the presence of phenols. This color change occurs due to the formation of an iron-phenol complex.

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1y ago

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What is the purpose of the ferric chloride test and how is it used in chemical analysis?

The purpose of the ferric chloride test is to detect the presence of phenols in a substance. In chemical analysis, ferric chloride is used as a reagent to react with phenols, producing a color change that indicates the presence of these compounds. This test is commonly used in organic chemistry to identify and quantify phenols in various samples.


Why acetoacetic ester gives ferric chloride test?

Acetoacetic ester gives a positive ferric chloride test due to the presence of the beta-keto group in the molecule. The keto group reacts with ferric chloride to form a colored complex, producing a characteristic color change that indicates the presence of the keto group in the compound.


Why ferric chloride test is not used to identify alcohols?

Because it's a test for phenols or enols. Please see the link.


Why is ferric chloride used in modified borntrager's test?

Ferric chloride is used in modified Borntrager's test as a reagent to detect the presence of phenolic compounds in a sample. It forms a colored complex with phenols, which helps in identifying the presence of phenolic substances in the test solution.


How do you prepare neural ferric chloride solution?

The ferric chloride test is used to determine the presence or absence of phenols in a given sample. Enols give positive results as well. The bromine test is useful to confirm the result, although modern spectroscopic techniques (e.g. NMR and IR spectroscopy) are far superior in determining the identity of the unknown. The quantity of total phenols may be spectroscopically determined by the Folin-Ciocalteau assay.


Is vanillin positive in a ferric chloride test?

Yes, vanillin is positive in a ferric chloride test. When vanillin reacts with ferric chloride, it forms a colored complex that gives a characteristic blue or green color, indicating the presence of phenolic compounds.


What is the mechanism of ferric chloride test?

The ferric chloride test is used to detect the presence of phenolic compounds in a substance. It involves adding ferric chloride solution to the sample, and if phenolic compounds are present, a colored complex forms due to the formation of iron-phenol complexes. The intensity of the color change can be used to estimate the concentration of phenolic compounds in the sample.


Is ferric chloride neutral?

No, ferric chloride is not neutral. It is an acidic compound.


What is the pH value of ferric chloride?

The ferric chloride solution is acidic.


What colour does Ferric chloride burn?

Ferric chloride burns with a blue/green flame.


Is ferric sodium chloride a mixture or not?

Ferric sodium chloride (Na3ClFe) is a compound not a mixture.


What type of compound is ferric chloride?

Ferric chloride is an ionic compound (and is classified as a salt).