Show by a chemical reaction with water that $N a_{2} O$ is a basic oxide and $C l_{2} O_{7}$ is an acidic oxide.

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Solution

$N a_{2} O + H_{2} O ⟶ 2 N a O H$
that's why $N a_{2} O$ is basic oxide as it form basic oxide.
$C l_{2} O_{7} + H_{2} O ⟶ 2 H C l O_{4}$
The $C l_{2} O_{7}$ forms acid on reaction with water. Thus, it is acidic oxide.

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