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Question
In the laboratory preparation of HCl gas from sodium chloride, state why the following is preferred.
Conc. H2SO4 as a reactant.
Very Short Answer
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Solution
It is a non-volatile acid with a high boiling point. It can displace the volatile (HCl) gas from its salt when heated.
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Chapter 8: Study of Compounds: Hydrogen Chloride - Intext Question [Page 165]
