Question

hoàn thành sơ đồ chuyển hóa sau(ghi rõ điều kiện)

Na2CO3➝CO2➝NaHCO3➝Na2CO3➝BaCO3➝←Ba(HCO3)2➝BaCl2➝BaSO3➝SO2➝CaSO3

Answer 1

Na2CO3 + 2HCl => 2NaCl + H2O + CO2↑

CO2 + H2O + Na2CO3 => 2NaHCO3

NaHCO3 + NaOH => Na2CO3 + H2O

Na2CO3 + Ba(OH)2 => 2NaOH + BaCO3↓

CO2 + H2O + BaCO3 => Ba(HCO3)2

Ba(HCO3)2 + Ba(OH)2 => H2O + 2BaCO3↓

Ba(HCO3)2 + 2HCl => BaCl2 + 2H2O + 2CO2↑

BaCl2 + K2SO3 => 2KCl + BaSO3↓

BaSO3 + H2SO4 => BaSO4↓ + H2O + SO2↑

SO2 + CaO => CaSO3

Answer 2

Na₂CO₃ + H₂SO₄ \(\rightarrow\) Na₂SO₄ + CO₂ + H₂O

CO₂ + NaOH \(\rightarrow\) NaHCO₃

2NaHCO₃ \(\underrightarrow{t^o}\) Na₂CO₃ + CO₂ + H₂O

Na₂CO₃ + BaCl₂ \(\rightarrow\) BaCO₃ + 2NaCl

BaCO₃ + CO₂ + H₂O \(\rightarrow\) Ba(HCO₃)₂

Ba(HCO₃)₂ + 2HCl \(\rightarrow\) BaCl₂ + 2CO₂ + 2H₂O

BaCl₂ + Na₂SO₃ \(\rightarrow\) BaSO₃ + 2NaCl

BaSO₃ \(\underrightarrow{t^o}\) BaO + SO₂

SO₂ + Ca(OH)₂ \(\rightarrow\) BaSO₃ + H₂O