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NTA Abhyas JEE Main2020Chemistryp Block Elements (Group 15, 16, 17 & 18)Practice

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

Options

  1. Aoxygen in air reacts with the emitted HCl gas to form a cloud of chlorine gas
  2. Bstrong affinity of HCl gas for moisture in air results in forming of droplets of liquid solution which appears
  3. Cdue to strong affinity for water, concentrated hydrochloric acid pulls moisture of air towards itself. This mo
  4. Dconcentrated hydrochloric acid emits strongly smelling HCl gas all the time

Correct answer

A. oxygen in air reacts with the emitted HCl gas to form a cloud of chlorine gas

Step-by-step solution

4 H C l + O 2 a i r → 2 C l 2 + 2 H 2 O c l o u d o f w h i t e f u m e s

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