Chemistry, asked by avdhutdhamankar2265, 1 year ago

why is sulphuric acid choose as drying agent for hcl

Answers

Answered by Anonymous
0
It is pure or concentrated sulphuric acid that is a useful drying agent.  Since it contains no water and is a strong acid it reacts vigorously with any water to form hydroxonium ions:

  H2SO4  +  H2O  →  H3O+  +  HSO4-

so the reaction removes water.

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Answered by Rajdeep11111
3
Sulphuric acid is a highly hygroscopic acid and hydrogen chloride gas is also an acid, so there is no chance of reaction between hydrogen chloride gas and sulphuric acid. Thus conc. sulphuric acid dries HCl gas without chemically reacting with it. So it is used.
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