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Which of the following oxide is amphoteric?

Option: 1

SiO_2


Option: 2

CO_2


Option: 3

SnO_2


Option: 4

CaO


Answers (1)

best_answer

S{n}O_{2}  is an amphoteric oxide because it reacts with acids as well as bases to form corresponding salts.

S{n}O_{2}+4HCl\rightarrow S{n}Cl_{4}+2H_{2}O

S{n}O_{2}+2NaOH\rightarrow Na_{2}SnO_{3}+H_{2}O

S{n}O_{2}   is an amphoteric in nature as it acts as both acid and base.

CaO  is basic. SiO_{2} and CO_{2}? are acidic in nature.
The correct answer is option 3.

Posted by

jitender.kumar

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