Choose the most appropriate answer from the following list of oxides that fit the description. Each answer may be used only once :
$S O_{2}, S i O_{2}, C O, M g O, N a_{2} O, A l_{2} O_{3}$
An amphoteric oxide.

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Solution

The oxide which can act both as an acid and as a base is known amphoteric oxide.
Aluminum oxide is an example of amphoteric oxide( $A l_{2} O_{3}$ ).
Aluminum oxide reacts with both acids and bases.
The reaction of Aluminum oxide with acid(Hydrochloric acid) is, $\underset{A l u m i n u m o x i d e}{A l_{2} O_{3} (s)} + \underset{H y d r o c h l o r i c a c i d}{3 H C l (l)} \to \underset{A l u m i n u m c h l o r i d e}{A l C l_{3} (a q)} + 3 H_{2} O (l)$
And the reaction of Aluminum oxide with base(Sodium hydroxide) is, $\underset{A l u m i n u m o x i d e}{A l_{2} O_{3} (s)} + \underset{S o d i u m h y d r o x i d e}{2 N a O H (a q)} \to \underset{S o d i u m a l u m i n a t e}{2 N a A l O_{2} (a q)} + H_{2} O (l)$
So Aluminum oxide is an amphoteric oxide.

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Similar questions

(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:
$M g O, Z n O, P_{2} O_{3}, A l_{2} O_{3}, N O_{2}$

Choose the most appropriate answer from the following list of oxides which fit the descriptions. Each answer may be used only once:

[S O_{2}, S i O_{2}, A l_{2} O_{3}, M g O, C O, N a_{2} O]

(i) A basic oxide
(ii) An oxide which dissolves in water forming an acid.
(iii) An amphoteric oxide
(iv) A covalent oxide of a metalload.

(b) Choose the most appropriate answer from the following list of oxides which fit the description. Each answer may be used only once.

$[{SO}_{2}, {SiO}_{2}, {Al}_{2} O_{3}, MgO, CO, {Na}_{2} O]$ .
(i) A basic oxide.
(ii) An oxide which dissolves in water forming an acid.
(iii) An amphoteric oxide.
(iv) A covalent oxide of a metalloid.

Choose the most appropriate amewer from the following list of oxides which fit the description. Each answer may be used only once :

$S O_{2}, S i O_{2}, C O, A l_{2} O_{3}, M g O, N a_{2} O$

An oxide which dissolves in water forming an acid.

Q. Choose the most appropriate answer from ( SO2 , SiO2 , Al2O3 , CO , MgO , Na2O )(a) A covalent oxide of a metalloid. (b) An oxide which when dissolved us water form acid . (c) A basic oxide (d) An amphoteric oxide

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Choose the most appropriate answer from the following list of oxides that fit the description. Each answer may be used only once :SO2,SiO2,CO,MgO,Na2O,Al2O3An amphoteric oxide.

Choose the most appropriate answer from the following list of oxides that fit the description. Each answer may be used only once :
$S O_{2}, S i O_{2}, C O, M g O, N a_{2} O, A l_{2} O_{3}$
An amphoteric oxide.