Reaction rates. Magnesium metal (Mg) coils are placed in two vials. Hydrochloric acid (HCl) of different concentrations, 0.05 M (right) and 0.5 M (left), is added to the vials. Magnesium reacts with the acid producing hydrogen bubbles: Mg + HCl -> MgCl2 + H2. The reaction proceeds more vigorously in the left vial, demonstrating that the reaction rate is higher for higher concentration of the acid. This is an example of a single displacement reaction. | |
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