When sodium is heated in moist air, the ultimate product obtained is:

N a_{2} O

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N a O H

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N a_{2} C O_{3}

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N a_{2} O_{2}

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Solution

The correct option is C $N a_{2} C O_{3}$
When sodium is heated with moist air, the ultimate product obtained is $N a_{2} C O_{3}$ .
In moist air, a layer of sodium oxide, hydroxide and carbonate is formed on its surface due to which, it loses its lustre.
The complete reaction sequence is as follows:
$4 N a + O_{2} \to 2 N a_{2} O 2 H_{2} O - -- \to 4 N a O H 2 C O_{2} - -- \to 2 N a_{2} C O_{3} + 2 H_{2} O$

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