Hydrogen chloride gas, being highly soluble in the water, is dried by:

phosphorous pentoxide

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quick lime

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anhydrous calcium choride

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concentrated sulphuric acid

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Solution

The correct option is A concentrated sulphuric acid
HCl is dried by passing through concentrated sulphuric acid.

HCl gas can't be dried using drying agents like $P_{2} O_{5}$ and $C a O$ and since they react with HCl as follows.
$2 P_{2} O_{5} + 3 H C l \to P O C l_{3} + 3 H P O_{3}$

$C a O + H C l \to C a C l_{2} + H_{2} O$

Option D is correct.

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Similar questions

Choose the correct answer from the options given below:
(i) Hydrogen chloride gas being highly soluble in water is dried by:
(a) Anhydrous calcium chloride
(b) Phosphorous penta oxide
(c) Quick lime
(d) Concentrated sulphuric acid.

Hydrogen chloride gas being highly soluble in water is dried by:

Q. Assertion :Hydrogen chloride gas can be dried over quick lime. Reason: HCl is less reactive and it reacts with calcium oxide to form calcium oxychloride and does not absorb water in the reaction.

Q. Give reasons for the following:
Hydrogen chloride gas cannot be dried over quick lime.

(a) Write the equation for:
(i) the preparation of hydrogen chloride from sodium chloride and sulphuric acid. State whether the sulphuric acid should be concentrated or dilute.
(ii) the preparation of ammonia from ammonium chloride and calcium hydroxide.
(iii) the reaction of hydrogen chloride with ammonia.

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Hydrogen chloride gas, being highly soluble in the water, is dried by:

The correct option is A concentrated sulphuric acidHCl is dried by passing through concentrated sulphuric acid.HCl gas can't be dried using drying agents like P2O5 and CaO and since they react with HCl as follows.2P2O5+3HCl→POCl3+3HPO3CaO+HCl→CaCl2+H2OOption D is correct.