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JEE Main2003Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

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 HCI gas to form a cloud of chlorine gas
  2. Bstrong affinity of HCI gas for miosture 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 it self. This m
  4. Dconcentrated hydrochloric acid emits strongly smelling HCI gas all the time.

Correct answer

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

Step-by-step solution

4 HCI + O ₂ 2 Cl ₂+2 H ₂ O Cloud of white fumes

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