Metal reactivity. Three metals are placed in test tubes with 1 M solutions of hydrochloric acid at room temperature: magnesium (left),zinc (centre),and copper (right). Magnesium reacts more vigorously than zinc,both producing hydrogen bubbles: Mg + HCl -> MgCl2 + H2,Zn + HCl -> ZnCl2 + H2. This is an example of a single displacement reaction. Copper does not react with hydrochloric acid | |
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