To prepare hydrogen chloride from sodium chloride and concentrated sulphuric acid.

Concentrated

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Solution

The correct option is A
Concentrated

Concentrated sulphuric acid is used to prepare hydrogen chloride by reacting sodium chloride with sulphuric acid. The equation for the reaction is given below.

$N a C l + H_{2} S O_{4} \to N a H S O_{4} + H C l ↑$

The hydrochloric acid produced in this reaction is in gaseous form.

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In the preparation of hydrogen chloride from sodium chloride and sulphuric acid, the sulphuric acid used should be concentrated

Write the equation for:
(a) the preparation of hydrogen chloride from sodium chloride and sulphuric acid. State whether the sulphuric acid should be concentrated or dilute.
(b) the reaction between hydrogen chloride and ammonia.

(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.

Q. (a) Why is high temperature avoided in the preparation of hydrogen chloride from sodium sulphate and concentrated sulphuric acid?
(b) Sodium chloride is preferred for the preparation of HCI. Why? [2 MARKS]

(a) What is the property of concentrated sulphuric acid which allows it to be used in the preparation of hydrogen chloride and nitric acid?
(b) What property of hydrogen chloride is demonstrated when it is collected by downward delivery (upward displacement)?
(c) Why is hydrogen chloride not collected over water?

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To prepare hydrogen chloride from sodium chloride and concentrated sulphuric acid.

The correct option is A ConcentratedConcentrated sulphuric acid is used to prepare hydrogen chloride by reacting sodium chloride with sulphuric acid. The equation for the reaction is given below. NaCl+H2SO4→NaHSO4+HCl↑ The hydrochloric acid produced in this reaction is in gaseous form.