4NO2 + O2 + 2H2O = 4HNO3
2HNO3 + BaO = Ba(NO3)2 + H2O
Ba(NO3)2 + H2SO4 = BaSO4 + 2HNO3
BaSO4 + 2NaOH = Ba(OH)2 + Na2SO4
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Verified answer
4NO2 + O2 + 2H2O = 4HNO3
2HNO3 + BaO = Ba(NO3)2 + H2O
Ba(NO3)2 + H2SO4 = BaSO4 + 2HNO3
BaSO4 + 2NaOH = Ba(OH)2 + Na2SO4