what are amhoteric oxides give example.

Asked by  | 17th Jul, 2011, 11:08: AM

Expert Answer:

Metal oxides are usually basic oxides, while those oxides of non-metals are acidic oxides. Amphoteric oxides are those oxides which show both acidic as well as basic behavior to form salts and water. Aluminium oxide  reacts in this manner with acids and bases.

            Al2O3      +          6 HCl   ?     2 AlCl3    +    3 H2O

(Acting as a base)           Acid             Salt              Water

            Al2O3      +          2 NaOH   ?     2 NaAlO2    +    H2O

(Acting as an acid)          Base                  Salt              Water

Answered by  | 18th Jul, 2011, 10:17: AM

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