Question

how hcl gas is identified in laboratory​

Answer 1

1. We produce Hydrogen Chloride in the laboratory by treating sodium chloride with concentrated sulphuric acid. We, then, heat this mixture up to 420K. We get Sodium bisulphate as a by-product which is insoluble.
2. We dry this HCl by treating it with concentrated sulphuric acid.

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Answer 2

Explanation:

We produce Hydrogen Chloride in the laboratory by treating sodium chloride with concentrated sulphuric acid. We, then, heat this mixture up to 420K. We get Sodium bisulphate as a by-product which is insoluble. ... We dry this HCl by treating it with concentrated sulphuric acid.