Question

Differentiate between iron and copper in terms of their reactivity towards dilute

hydrochloric acid , write the chemical equations involved.​

Answer 1

Explanation:

• When iron reacts with dil.HCl gives iron chloride and hydrogen gas is produced.

       Fe + 2HCl → FeCl₂ + H₂

• Fe displaces H from HCl to form FeCl₂. This is a single displacement reaction.
• The reactivity of Fe is higher than H hence it replaced it.

• When Cu reacts with dil.HCl, no reaction takes place between them.
• Because the reactivity of H is higher than Cu.
• Hence Cu can not replace it.
• Cu + dil. HCl → NO REACTION