Yes, it is amphoteric, at the same time it behaves like acid AND like base: it acts as an acid when in a base: ZnO(s) + 2OH-(aq) +H20(l) -> [Zn(OH)4]2-(aq) it reacts as a base when in acid: ZnO(s)...
Aluminum*)oxide is an amphoteric compound by being both 1. acidic and 2. alkaline 1. acidic It will dissolve in hydroxide (an alkaline solution): Al2O3 + 2OH- + 3H2O --> 2 Al(OH)4- aluminate anion...
Aluminium oxide is called Amphoteric oxide because it has both acidic and basic properties. Basic property: Al2O3 + H+ ----> Al3+ + H2O Acidic properties: Al2O3 + OH- + H2O----> [Al(OH)4]-