What is amphoteric oxide? And write its reaction with acid and base

1.	What is amphoteric oxide? And write its reaction with acid and base
Answer» The oxide which shows both acidic and basic nature when reacted with acids and base. Eg Al2O3. Al2O3 + HCl ----> AlCl3 + H2O Al2O3 + NaOH ---->NaAlO2 + H2O In first reaction amphoteric oxide is reacted with acid in which it forms a salt and water. Similarly in second reaction it is reacted with a base in which it forms salt and water.<br>Oxides of metals which have both acidic as well as basic behaviour are known as amphoteric oxidesExample:- Acidic medium :-Al2O3+6HCl---> 2AlCl3+3H2OBasic medium :- Al2CO3+2NaOH---> 2NaAlO2+H2O

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