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Question
Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
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Solution
Sodium metal reacts violently with dilute hydrochloric acid to form sodium chloride and hydrogen. This reaction shows that sodium metal is very reactive.
\[\ce{\underset{Sodium}{2Na_{(s)}} + \underset{Hydrochloric acid}{2HCl_{(aq)}} -> \underset{Sodium chloride}{2NaCl_{(aq)}} + \underset{Hydrogen}{H2_{(g)}}}\]
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