Question

Give one example, with equation, of the displacement of hydrogen by a metal from an acid.

Answer 1

Sodium metal reacts violently with dilute hydrochloric acid to form sodium chloride and hydrogen. This reaction shows that sodium metal is very reactive.

\[\ce{\underset{Sodium}{2Na_{(s)}} + \underset{Hydrochloric acid}{2HCl_{(aq)}} -> \underset{Sodium chloride}{2NaCl_{(aq)}} + \underset{Hydrogen}{H2_{(g)}}}\]