Question

Aniline dissolves in ${\text{HCl}}$ due to the formation of:
A. Anilinium chloride
B. O-chloroaniline
C. Azo dye
D. Diazonium chloride

Answer 1

Aniline is an organic aromatic ring compound which can be drawn as a benzene with one amino group attached. It has a molecular formula of ${{\text{C}}_{\text{6}}}{{\text{H}}_{\text{5}}}{\text{N}}{{\text{H}}_{\text{2}}}$. When aniline dissolves in ${\text{HCl}}$ the whole ${\text{HCl}}$ molecule is combined with Aniline to form the new compound.

Complete step by step answer:
Let’s start with discussing aniline for better understanding of the question. Aniline is an organic aromatic ring compound which can be drawn as a benzene with one amino group attached. It has a molecular formula of ${{\text{C}}_{\text{6}}}{{\text{H}}_{\text{5}}}{\text{N}}{{\text{H}}_{\text{2}}}$. Also, aniline is the simplest aromatic amino compound. Aniline is present in liquid state and is soluble in water as well.
Coming to the question we need to tell which compounds out of a given compound is formed when aniline is dissolved in ${\text{HCl}}$. Now, thinking of all the possibilities that can happen one of the possibility is that the whole ${\text{HCl}}$ group comes and attaches with the amino group leads to the formation of ammonia group with a positive charge due to extra hydrogen and a chlorine group with negative charge and these two molecules are connected with ionic bond leads to the formation of ${{\text{C}}_{\text{6}}}{{\text{H}}_{\text{5}}}{\text{N}}{{\text{H}}_{\text{3}}}^{\text{ + }}{\text{C}}{{\text{l}}^{\text{ - }}}$. This molecule is known as Anilinium chloride.
So, the answer to this question is option A. Anilinium Chloride.

$\therefore$ Option A is correct.

Note:
Aniline is an organic aromatic ring compound which is mainly used for the synthesis of polyurethane and other industrial chemicals. Even though it is useful from an industrial point of view, this compound is actually toxic when ingested, inhaled or skin contact. Aniline destroys the haemoglobin, a protein present in human blood which transports oxygen throughout the body. Hence is very dangerous in nature.