Sodium is heated in air at 350∘C to form 'X'. 'X' absorbs CO2 and forms sodium carbonate and Y. Which of the following is Y?
2Na O2−→ Na2O2
Sodium when heated in presence of air at 350∘C forms sodium peroxide.
2Na2O2 + 2CO2 → 2Na2CO3 + O2
Sodium peroxide absorbs carbon dioxide and forms sodium carbonate and oxygen.