Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g)
Here's what's happening:
* Mg(s): Magnesium metal is the solid reactant.
* HCl(aq): Hydrochloric acid is the aqueous reactant.
* MgCl₂(aq): Magnesium chloride is the aqueous product.
* H₂(g): Hydrogen gas is the gaseous product.
Explanation:
* Magnesium (Mg) is more reactive than hydrogen (H) and displaces it from hydrochloric acid (HCl).
* The magnesium atoms react with the hydrogen ions (H+) from the acid, forming magnesium ions (Mg²+) and hydrogen gas (H₂).
* The chloride ions (Cl-) remain in solution, combining with the magnesium ions to form magnesium chloride (MgCl₂).
Important Note: This reaction is exothermic, meaning it releases heat and will cause the solution to become warm.
