Which compound reacts with neutral iron(III) chloride solution to produce an intense violet coloration?
Answer and explanation
Correct answer: C. Phenol
Phenols react with neutral FeCl3 solution to form characteristic colored coordination complexes (e.g. violet, blue, or green complex [Fe(OC6H5)6]3-), providing a standard qualitative test distinguishing phenols from aliphatic alcohols.
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More Oxygen and Nitrogen Containing Compounds questions
- What product is formed by the controlled oxidation of a secondary alcohol (such as propan-2-ol) with acidified potassium dichromate?
- Which reagent distinguishes primary, secondary, and tertiary alcohols based on the rate of turbidity formation?
- Why is phenol significantly more acidic than cyclohexanol (pKa ~ 10 vs ~ 16)?
- What test distinguishes aldehydes from ketones by forming a bright silver mirror on the inner glass surface of the test tube?
- What reddish precipitate is formed when an aliphatic aldehyde is heated with Fehling's solution?
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