* Basic Oxides: Basic oxides react with water to form hydroxides, which are basic in nature (alkaline).
* CaO + H₂O → Ca(OH)₂ (Calcium hydroxide)
* Neutralization: Acids and bases react with each other in a process called neutralization. The hydrogen ions (H+) from the acid react with the hydroxide ions (OH-) from the base to form water (H₂O), and a salt is also formed.
* Acid + Base → Salt + Water
* Calcium Oxide and Acids: When calcium oxide reacts with an acid, the following happens:
1. Calcium oxide reacts with water present in the solution to form calcium hydroxide.
2. Calcium hydroxide then reacts with the acid, neutralizing it and forming a salt (e.g., calcium chloride) and water.
Example:
The reaction of calcium oxide with hydrochloric acid (HCl) produces calcium chloride (CaCl₂) and water:
CaO + 2HCl → CaCl₂ + H₂O
In summary: Calcium oxide's ability to neutralize acids stems from its property of being a basic oxide, which allows it to form a base (calcium hydroxide) that can then react with the acid in a neutralization reaction.
