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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
NTA Abhyas
NTA Abhyas 2020
The p-Block Elements - Part2
A
oxygen in air reacts with the emitted HCl gas to form a cloud of chlorine gas
80%
B
strong affinity of HCl gas for moisture in air results in forming of droplets of liquid solution which appears like a cloudy smoke
10%
C
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
5%
D
concentrated hydrochloric acid emits strongly smelling HCl gas all the time
5%
Solution:
$4HCl+\underset{a i r}{O_{2}} \rightarrow \underset{c l o u d \, o f \, w h i t e \, f u m e s}{2 C l_{2} + 2 H_{2} O}$