Na->Na2O2->NaOH->NaHCO3->CO2->Ba(HCO3)2->BaCO3

Question

Na->Na2O2->NaOH->NaHCO3->CO2->Ba(HCO3)2->BaCO3

Answer 1

1) 2Na + O₂ = Na₂O₂
2) 2Na₂O₂ + H₂O = 4NaOH + O₂
3) NaOH + H₂CO₃ = NaHCO₃ + H₂O
4) NaHCO₃ + HCl = NaCl + CO₂ + H₂O
5) CO₂ + Ba(OH)₂ = Ba(HCO₃)₂
6) Ba(HCO₃)₂ = BaCO₃ + H₂O + CO₂