Here's the balanced chemical equation for the reaction:
Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g)
Explanation:
* Magnesium (Mg) is a reactive metal.
* Hydrochloric acid (HCl) is a strong acid, meaning it readily donates hydrogen ions (H+).
* When magnesium comes into contact with hydrochloric acid, the following happens:
* Hydrogen ions (H+) from the acid react with the magnesium atoms, displacing them from the magnesium metal.
* This forms magnesium chloride (MgCl₂), a soluble salt.
* The displaced hydrogen ions combine to form hydrogen gas (H₂), which is released as bubbles.
Observations:
* You will observe vigorous bubbling as hydrogen gas is produced.
* The solution will heat up due to the exothermic nature of the reaction.
* The magnesium metal will dissolve as it reacts with the acid.
Safety Precautions:
* This reaction is exothermic and produces hydrogen gas, which is flammable.
* Wear appropriate safety goggles and gloves when conducting this experiment.
* Perform the reaction in a well-ventilated area.
* Never mix large amounts of magnesium and hydrochloric acid, as this can lead to a violent reaction.
