Question

In the following reactions, $ZnO$ is respectively acting as a/an:
$\left(i\right)ZnO+N{a}_{2}O\to N{a}_{2}Zn{O}_2$
$\left(ii\right)ZnO+C{O}_2\to ZnC{O}_3$

• A. Basic and Acid
• B. Base and Base
• C. Acid and Acid
• D. Acid and Base

Answer 1

The correct option is D Acid and Base

Zinc oxide $\left(ZnO\right)$ when reacted with $N{a}_{2}O$ acts as an acid while with $C{O}_2$, it act as a base. Therefore, it is an amphoteric oxide.
$\underset{Acid}{ZnO}+\underset{Base}{N{a}_{2}O}\to \underset{Salt}{N{a}_{2}Zn{O}_2}$

$\underset{Base}{ZnO}+\underset{Acid}{C{O}_2}+\to \underset{salt}{ZnC{O}_3}$