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Preparations and Uses of Sodium Carbonate

On heating so...

Question

On heating sodium carbonate ______ is evolved

A

C O_{2}

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B

C O

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C

H_{2} O

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D

N O

gas

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Solution

The correct option is A $C O_{2}$
When sodium carbonate is heated then it decomposes to form sodium oxide and carbon dioxide gas is evolved. This can be shown as:

$N a_{2} C O_{3} \to N a_{2} O + C O_{2}$

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Preparations and Uses of Sodium Carbonate

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