Amphoteric Oxides List - Summary
Amphoteric oxides are the oxides that behave as both acidic and basic oxides. Amphoteric Oxides have features of acidic as well as basic oxides that neutralize both acids and bases.”
Amphoteric oxides dissolve in water to form alkaline solutions. Alkaline solutions contain hydroxide ions. Thus aluminium oxide (Al2O3) reacts with hydrochloric acid to form aluminum chloride and water. With sodium hydroxide solution it forms sodium aluminate (NaAlO2) and water. Other common examples of amphoteric oxides include ZnO, SnO and PbO.
Amphoteric Oxides List – Properties
| Oxides | Properties |
| B2O3 | Weakly acidic |
| Al2O3 | Amphoteric |
| Ga2O3 | Amphoteric |
| In2O3 | Weakly base |
| Tl2O3 | Basic, oxidizing |
Amphoteric Oxides Examples
The term amphoteric means both base and acid. Amphoteric oxides hold both acidic and basic properties. The oxides of zinc and aluminum are examples. When they get react with acids, they form salts. Also, they react with alkalis to produce complex salts. Amphoteric Oxides ExamplesLet us look at some of the amphoteric oxides examples or amphoteric oxides listed below:
- ZnO(s) + 2NaOH(aq) → Na2ZnO2(aq) + H2O(l)
- ZnO(s) + 2HNO3(aq) → Zn(NO3)2(aq) + H2O(l)
- Al2O3(s) + 2NaOH(aq) → 2NaAlO2(aq) + H2O(l)
- Al2O3(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2O(l)
You can download the Amphoteric Oxides List PDF using the link given below.