Identify the gas from the following observations:
A colourless gas, having a pungent and irritating smell, which turns blue litmus red. It gives dense white fumes when a glass rod is dipped in ammonium hydroxide solution is held in it.

Open in App

Solution

Hydrogen chloride (HCl) gas is a strong-smelling colourless gas with an irritating odour that fumes in moist air.
Hydrogen chloride gas has a very high solubility in water.
Being acidic in nature, it turns blue litmus red.
It gives dense fumes as shown below:-
Ammonia (NH₃) gas and Hydrogen chloride (HCl) gas combine to form a solid called Ammonium chloride (NH₄Cl).
The reaction is as follows:
${NH}_{4} OH (l) + HCl (g) \to {NH}_{4} Cl (s) + H_{2} O (l) (Ammonium hydroxide)) (Hydrogen chloride) (Ammonium chloride) (Water)$
The dense fumes are a result of the suspension of particles of the solid Ammonium chloride in air.

Suggest Corrections

Similar questions

Identify the gas from the following observations:

A colourless gas which fumes strongly in air and has a sharp biting smell. It gives dense white fumes with a glass rod dipped in HCl.

Identify the gas from the following observations:

A greenish-yellow gas having a pungent and suffocating smell. It turns moist blue litmus paper red and then bleaches it.

Q. A white solid A when heated with sodium hydroxide solution, gives a pungent gas B, which turns red litmus blue. The solid, when dissolved in dilute nitric acid and treated with silver nitrate gives a white precipitate of C which is soluble in an ammonia solution.
Identify A, B and C. Give equations to show the reactions involved.

Q. Which of the following is an acidic gas which gives dense white fumes when the glass rod is dipped in ammonia solution and brought near it?

When a white crystalline compound ' S ‘ is warmed with concentrated sulfuric acid it gives a gas which mixes in moist air and forms dense white fumes with ammonia. When ’S' is warmed with sodium hydroxide solution, a gas is obtained which turns moist red litmus blue. Name the compound 'S' and each of the gases evolved.

Join BYJU'S Learning Program

Identify the gas from the following observations:A colourless gas, having a pungent and irritating smell, which turns blue litmus red. It gives dense white fumes when a glass rod is dipped in ammonium hydroxide solution is held in it.

Identify the gas from the following observations:
A colourless gas, having a pungent and irritating smell, which turns blue litmus red. It gives dense white fumes when a glass rod is dipped in ammonium hydroxide solution is held in it.