Sodium is heated in excess of air, free from `CO_(2)` at `350^(@)C` to form `X.X` absorbs `CO_(2)` and forms `Na_(2)CO_(3)` and `Y.'X'` and `'Y'` are respectively :

Options

A. `Na_(2)O` and `O_(2)`
B. `Na_(2)O_(2)` and `O_(2)`
C. `NaO_(2)` and `O_(2)`
D. `Na_(2)O_(2)` and `O_(3)`

Answer

B

Explanation

`2Na+O_(2)(air)overset(350^(@))rarrNa_(2)O_(2)(X)`
`2CO_(2)+2Na_(2)O_(2) rarr2Na_(2)CO_(3)+O_(2)(Y)`
Note: `Na_(2)O_(2)+O_(2) underset(300 atm)overset(450^(@)C)(rarr) 2NaO_(2)`
`Na+O_(2) ("limited amount") overset(180^(@)C)(rarr) Na_(2)O`