When NaOH is mixed with an unknown non-metallic oxide ‘X’, sodium carbonate is produced. Name the unknown substance X.

$N a O H + X \to N a_{2} C O_{3} + H_{2} O$

CO₂

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Na₂O

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CaO

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HCl

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Solution

The correct option is A
CO₂

Sodium hydroxide reacts with carbon dioxide to give sodium carbonate and water.

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

Base Non metallic Salt Water

oxide

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When NaOH is mixed with an unknown non-metallic oxide ‘X’, sodium carbonate is produced. Name the unknown substance X. NaOH+X→Na2CO3+H2O

The correct option is A CO2 Sodium hydroxide reacts with carbon dioxide to give sodium carbonate and water. 2NaOH + CO2 → Na2CO3 + H2O Base Non metallic Salt Water oxide

When NaOH is mixed with an unknown non-metallic oxide ‘X’, sodium carbonate is produced. Name the unknown substance X.

$N a O H + X \to N a_{2} C O_{3} + H_{2} O$

The correct option is A
CO₂

Sodium hydroxide reacts with carbon dioxide to give sodium carbonate and water.

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

Base Non metallic Salt Water

oxide