Question

Phenol gives characteristics coloration with:
A.Iodine Solution
B.Bromine water
C.Aqueous $FeC{l_3}$
D.Ammonium Hydroxide

Answer 1

First of all we should be aware of phenol, its properties for solving this question. Phenol is an aromatic compound having the molecular formula as ${C_6}{H_6}OH$. It is a white crystalline solid which is volatile in nature. It was first extracted from the coal tar.

Complete step-by-step answer: Phenol molecule generally consists of a phenolic group attached with a hydroxyl group.
Properties of Phenol:-
Boiling point – The boiling point of phenols are generally higher as compared to other hydrocarbons having equal molecular masses. This is because of the presence of intermolecular hydrogen bonding between the hydroxyl groups of alcohol molecules.
Solubility - The solubility of alcohol decreases with the increase in the size of the alkyl group, this is because of the presence of alkyl group attached to hydroxyl group which is generally hydrophobic in nature.
Acidity – They react with active metals to form corresponding alkoxide.
Uses of Phenol:-
Its polymerization reaction with formaldehyde is generally used to prepare phenolic resins. These resin are known as phenol-formaldehyde resin.
It is also used in studying and extracting bio-molecules.
It is also used in cosmetic industries for the manufacturing of sunscreens.
Test of phenol:-
As we know, phenol gives characteristic coloration with aqueous solution of $FeC{l_3}$ as it formed a color coordination compound in which iron is hexavalent.

Thus, the option C, is the correct option.

Note: Phenol is considered to be toxic to humans via oral exposure. Some of its side effects are:- progressive weight loss, vertigo, a dark coloration of the urine and it will also cause chronic blood and liver effects when exposed to humans.