(a) What must be added to sodium chloride to prepare hydrogen chloride?
(b) Write the equation for the reaction which takes place in question (a).
(c) What will you observe, when hydrogen chloride mixes with ammonia?

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Solution

(a) Sodium chloride and sulphuric acid are used as the main reactants for the production of hydrogen chloride gas.

(b) The reaction at temperature below 200⁰C takes place as follows:

NaCl(s) + H₂SO₄(aq) → NaHSO₄(s)+ HCl(g)

(c) When ammonia gas comes in contact with hydrogen chloride gas, it yields dense white fumes of ammonium chloride.

HCl(g) + NH₃(g) → NH₄Cl(s)

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(a) What must be added to sodium chloride to prepare hydrogen chloride? (b) Write the equation for the reaction which takes place in question (a). (c) What will you observe, when hydrogen chloride mixes with ammonia?

(a) What must be added to sodium chloride to prepare hydrogen chloride?
(b) Write the equation for the reaction which takes place in question (a).
(c) What will you observe, when hydrogen chloride mixes with ammonia?