Identify the substance 'Q' based on the information given below.
The white crystalline solid 'Q' is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.

Ammonia

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H C l

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Ammonium chloride

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None of these

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Solution

The correct option is B Ammonium chloride
The white crystalline solid is ammonium chloride formed by mixing gases ammonia and hydrochloric acid. When ammonium chloride is heated with sodium hydroxide solution ammonia gas is evolved.
${N H}_{4} C l + N a O H \to {N H}_{3} + N a C l + H_{2} O$

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Similar questions

Identify the substances based on the information given below and choose the correct option:

The white crystalline solid Q is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.

The pungent smell, when ammonium chloride is heated with sodium hydroxide solution, is due to the evolution of ___.

X, Y and Z are three crystalline solids which are soluble in water and have a common anion.

To help you to identify X, Y and Z, you are provided with the following experimental observation.

When Z is heated it leaves no residue. Warming Z with sodium hydroxide solution liberates a gas which turns moist red litmus paper blue.

INFERENCE: Z contains the __________ cation.

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