This reaction is a redox reaction, in which the metal zinc (Zn) reacts with hydrochloric acid (HCl) to form zinc chloride salt (ZnCl2) and hydrogen gas (H2).
- Reaction conditions:
This reaction occurs easily at room temperature. However, the reaction rate can significantly increase when the temperature rises.
- Reaction process:
When zinc reacts with hydrochloric acid, zinc becomes oxidized (donates e) from an oxidation state of 0 to an oxidation state of +2, while the H+ ions in HCl receive e and are reduced to hydrogen gas H2.
- Phenomenon:
When zinc reacts with HCl solution, we can see the strong bubbling phenomenon. The product of the reaction is hydrogen gas released, which is the cause of the bubbling. In addition, the solution will change from colorless to milky white due to the formation of the zinc chloride salt (ZnCl2) product.