(a) What are amphoteric oxides? Give two examples of amphoteric oxides.
(b) Choose the acidic oxides, basic oxides and neutral oxides from the following:
$N a_{2} O : C O_{2}; C O; S O_{2}; M g O; N_{2} O; H_{2} O .$
(c) Which of the following are amphoteric oxides:
$M g O, Z n O, P_{2} O_{3}, A l_{2} O_{3}, N O_{2}$

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Solution

(a)Oxides of metals which have both acidic as well as basic behaviour are known as amphoteric oxides. Such metallic oxides react with acids as well as a base to produce salt and water. Examples of Amphoteric oxides are aluminium oxide and zinc oxide

(b)
Acidic oxide: $C O_{2}, S O_{2}$
Basic oxide: $M g O, N a_{2} O$
Neutral oxide: $H_{2} O, C O, N_{2} O$

(c) $A l_{2} O_{3}, Z n O$

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Similar questions

Identify the following oxides with neutral, acidic, basic and amphoteric oxides.

i) {Al}_{2} O_{3} ii) MgO iii) {SO}_{2} iv) CO v) {Na}_{2} O vi) N_{2} O vii) ZnO viii) {CO}_{2} ix) {SO}_{3} x) CaO .

Out of the following oxides, the amphoteric oxide is :
(a) $F e_{2} O_{3}$ (b) $A l_{2} O_{3}$ (c) $P_{2} O_{3}$ (d) $N_{2} O$

C a O

M g O

C O_{2}

S O_{3}

N a_{2} O

Z n O

A l_{2} O_{3}

F e_{2} O_{3}

What are oxides ? Give two examples of each of the following oxides.

(a) Basis oxide (b) Acidic oxide

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