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Chemistry
Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes. The explanation for it is that :
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Q. Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes. The explanation for it is that :
AIEEE
AIEEE 2003
The p-Block Elements - Part2
A
concentrated hydrochloric acid emits strongly smelling HCl gas all the time
B
oxygen in air reacts wtih the emitted $HCl$ gas to form a cloud of chlorine gas
C
strong affinity of $HCl$ gas for moisture in air results in forming of droplets of liquid solution which appears like a cloudy smoke
D
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
Solution:
$2 HCl +\frac{1}{2} O _{2} \to H _{2} O + Cl _{2}$