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Preparations and Reactions of Sodium Oxide

The compounds...

Question

The compound(s) formed on combustion of sodium metal in excess air is/are:

A

N a_{2} O_{2}

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B

N a_{2} O

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C

N a O_{2}

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D

N a O H

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Solution

The correct options are
A $N a_{2} O_{2}$
C $N a O_{2}$
When oxygen is in excess :
$2 N a + O_{2} \to N a_{2} O_{2}$
$N a_{2} O_{2} + O_{2} \to 2 N a O_{2}$

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