Question

what are amphoteric oxides ? give an example . write balance equation to justify your answer.
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Answer 1

Amphoteric oxides can be defined as oxides that can behave as an acid as well as a base to produce a salt and water. It can either donate or accept a proton or H+ ion thus acting as base or an acid.
Metals that exhibit amphoterism include copper, zinc, lead, tin, beryllium, and aluminum. A common example of amphoteric oxide is zinc oxide (ZnO).

Answer 2

The oxides that shows both acidic and basic properties are called amphoteric oxides..

Example:

Aluminium Oxides reacts with both acids and bases:

$Al_{2}O_{3} + <strong>6</strong>HCl => <strong>2</strong>AlCl_{3} + <strong>3</strong>H_{2}O$

$Al_{2}O_{3} + <strong>2</strong>NaOH => <strong>2</strong>NaAlO_{2} + H_{2}O$

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