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Question

Sodium is heated in air at 350C to form 'X'. 'X' absorbs CO2 and forms sodium carbonate and Y. Which of the following is Y?

A

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B

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C

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D

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Solution

The correct option is B


2Na O2 Na2O2

Sodium when heated in presence of air at 350C forms sodium peroxide.

2Na2O2 + 2CO2 2Na2CO3 + O2

Sodium peroxide absorbs carbon dioxide and forms sodium carbonate and oxygen.


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