Here's why:
* Reactivity Series: Metals are arranged in a reactivity series based on their tendency to lose electrons and form positive ions. Metals higher in the series are more reactive.
* Hydrochloric Acid (HCl): This acid contains hydrogen ions (H+) which are looking to gain electrons.
* Reaction: A metal will react with hydrochloric acid if it is more reactive than hydrogen. The metal will displace hydrogen from the acid, forming a metal chloride salt and releasing hydrogen gas.
Copper is below hydrogen in the reactivity series, meaning it is less reactive. Therefore, it won't displace hydrogen from hydrochloric acid and no reaction will occur.
