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A colourless pungent smelling gas, which...

A colourless pungent smelling gas, which easily liquefies to a colourless liquid and freezes to a white crystalline solid, gives dense white fumes with ammonia. Identify the gas and write the chemical equation for its laboratory preparation.

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**Step-by-Step Solution:** 1. **Identify the Gas:** The gas described is colorless, has a pungent smell, easily liquefies, freezes to a white crystalline solid, and produces dense white fumes with ammonia. The gas that fits this description is Hydrochloric acid (HCl) gas. 2. **Chemical Properties:** - HCl is a colorless gas with a strong, pungent odor. - It can be liquefied into a colorless liquid and can freeze to form a white crystalline solid (solid HCl). ...
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Knowledge Check

  • A white solid X reacts with dil. HCl to give colourless gas which is used in fire extinguishers. The solid X is

    A
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