In the preparation of hydrogen chloride from sodium chloride and sulphuric acid, the sulphuric acid used should be concentrated
Concentrated
Dilute
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.
To prepare hydrogen chloride from sodium chloride and concentrated sulphuric acid.
(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.
(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?