Question

Which one among the following is an acidic oxide?
(a) Na2O
(b) CO
(c) CO2
(d) Al2O3

Answer 1

(d). Al2O3 is an acidic oxide

Answer 2

Al₂O₃ is an acidic oxide among the following. (Option d)

• The oxides metals are basic. Thus, Na₂O and CaO are basic oxides.
• They dissolve in water to produce acids to form acidic oxides.
• An oxide is itself a compound of oxygen and other elements.
• They are usually gasses at room temperature and react with water forming acidic compounds.
• The pH of acid increases when bonded with complex solvent bonds.
• The solutions of acid can be neutralized by reacting with alkalis to form salts.