. (a) What do you understand by amphoteric oxide
(a) What do you understand by amphoteric oxide?
(b) Give the balanced equations for the reaction with two different amphoteric oxides with a caustic alkali.
(c) Name the products formed.
(a) Amphoteric oxides are compounds which react with both acids and alkalis to form salt and water.
(b) ZnO + 2NaOH → Na2ZnO2 + H2O
Al2O3 + 2NaOH → 2NaAlO2 + H2O
(c) Sodium zincate and Aluminium zincate are the products formed.