Question

Ethyl amine reacts with nitrosyl chloride $\left( {{\text{NOCl}}} \right)$ to form:
A. Ethyl chloride
B. Ethyl alcohol
C. Ethyl nitrite
D. Nitro ethane

Answer 1

Hint: To solve this we must know the molecular formula of ethyl amine. During the reaction, the chloride group from the nitrosyl chloride replaces the amine group in ethyl amine.

Complete answer:
Nitrosyl chloride is a yellow coloured gas. Nitrosyl chloride is a very strong electrophile and an oxidising agent. It is also known as Tilden’s reagent. The molecular formula for nitrosyl chloride is ${\text{NOCl}}$.
Ethyl amine is a colourless gas and smells like ammonia. Ethyl amine is a nucleophilic base. the molecular formula for ethyl amine is ${\text{C}}{{\text{H}}_{\text{3}}} - {\text{C}}{{\text{H}}_{\text{2}}} - {\text{N}}{{\text{H}}_{\text{2}}}$.
The reaction of ethyl amine with nitrosyl chloride is as follows:
${\text{C}}{{\text{H}}_{\text{3}}} - {\text{C}}{{\text{H}}_{\text{2}}} - {\text{N}}{{\text{H}}_{\text{2}}} + {\text{NOCl}} \to {\text{C}}{{\text{H}}_{\text{3}}} - {\text{C}}{{\text{H}}_{\text{2}}} - {\text{Cl}} + {{\text{N}}_2} + {{\text{H}}_2}{\text{O}}$
From the reaction we can conclude that ethyl amine reacts with nitrosyl chloride to form ethyl chloride along with nitrogen gas and water.
Ethyl chloride is also known as chloroethane. Ethyl chloride is a colourless and flammable gas. It has sweet odour.
Thus, ethyl amine reacts with nitrosyl chloride to form ethyl chloride.

Thus, the correct option is (A) ethyl chloride.

Additional Information:
The vapours of ethyl chloride are flammable and narcotic. Ethyl chloride is a central nervous system depressant. Excess inhalation of ethyl chloride causes shallow breathing, loss of consciousness, depression in heart-rate and can even be fatal. Inhalation of ethyl chloride may lead to lungs, heart and kidney failure. Long term effects of ethyl chloride are liver and kidney damage.

Note:
Ethyl chloride is an ethylating agent. It is also used as a refrigerant, aerosol spray propellant and as a blowing agent in foam packaging. Ethyl chloride can be used as mid anaesthetic. It can be used to diagnose dead teeth in dentistry.