(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.
Why is higher ratio of calcium hydroxide is taken (with ammonium chloride) in labrotary preparation of ammonia