A-LevelChemistryAtoms, molecules and stoichiometry9701/12 · Oct/Nov 2022 · Q21 Mark
Sodium peroxide, Na2O2, is used to absorb carbon dioxide from the atmosphere and release oxygen in closed environments such as space capsules and submarines. 2Na2O2 + 2CO2 → 2Na2CO3 + O2 Which mass of sodium peroxide would be required to remove 2.4 dm³ of carbon dioxide from the atmosphere at room temperature and pressure?
A2.4 g
B3.9 g
C7.8 g
D15.6 g
✓ Correct answer
C: 7.8 g
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