Answer: A. 1.60 liters
Explanation:
[tex]2Na_2O_2+2CO_2\rightarrow 2Na_2CO_3+O_2[/tex]
As can be seen from the balanced chemical equation, 2 moles of [tex]CO_2[/tex] produce 1 mole of [tex]O_2[/tex].
According to Avogadro's law, every 1 mole of the gas occupies 22.4 liters at STP.
Thus [tex]2[/tex] moles of [tex]CO_2[/tex] occupies [tex]22.4\times 2=44.8L[/tex] at STP and produce 1 mole of [tex]O_2[/tex] i.e. 22.4 L
44.8 L of [tex]CO_2[/tex] will produce 22.4 L of [tex]O_2[/tex]
Thus [tex]3.20L[/tex] of [tex]CO_2[/tex] will produce [tex]\frac{22.4}{44.8}\times 3.20=1.60L[/tex]
