Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes. The explanation for it is that

Concentrated hydrochloric acid emits strongly smelling HClgas all the time

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Oxygen in air reacts with the emitted HClgas to form a cloud of chlorine gas

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Strong affinity of HClgas for moisture in air results in forming of droplets of liquid solution which appears like a cloudy smoke

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Due to strong affinity for water, concentrated hydrochloric acid pulls moisture of air towards itself. This moisture forms droplets of water and hence the cloud

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Solution

The correct option is B
Oxygen in air reacts with the emitted HClgas to form a cloud of chlorine gas

HCl is a gas.

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Similar questions

Q. When a bottle of conc. hydrochloric acid is opened, the white fumes produced is due to the immediate reaction of gas with in the air.

Q. At the start of an experiment, one end of a U-tube of 6 mm glass tubing is immersed in concentrated ammonia solution and the other end in concentrated hydrochloric acid. At the point in the tube where vapour of ammonia and hydrochloric acid meet, white cloud is formed. At what fraction of the distance along the tube from the ammonia solution, the white cloud is first formed?

Q. Clouds form when water vapour in the air ______ into water droplets.

(a) Name an element which reacts with hydrogen to form a compound which is strongly acidic in water.
(b) Explain why dilute hydrochloric acid cannot be concentrated by boiling beyond 22.2%.

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Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes. The explanation for it is that

The correct option is B Oxygen in air reacts with the emitted HClgas to form a cloud of chlorine gas HCl is a gas.

The correct option is B
Oxygen in air reacts with the emitted HClgas to form a cloud of chlorine gas

HCl is a gas.