CaO + H₂O = Ca(OH)₂
Ca(OH)₂ + 2HNO₃ = Ca(NO₃)₂ + 2H₂O
Ca(NO₃)₂ + Na₂SO₃ = CaSO₃↓ + 2NaNO₃
CaSO₃ + H₂SO₄ = CaSO₄ + SO₂↑ + H₂O
SO₂ + H₂O ⇄ H₂SO₃
H₂SO₃ + 2NaOH = Na₂SO₃ + 2H₂O
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Verified answer
CaO + H₂O = Ca(OH)₂
Ca(OH)₂ + 2HNO₃ = Ca(NO₃)₂ + 2H₂O
Ca(NO₃)₂ + Na₂SO₃ = CaSO₃↓ + 2NaNO₃
CaSO₃ + H₂SO₄ = CaSO₄ + SO₂↑ + H₂O
SO₂ + H₂O ⇄ H₂SO₃
H₂SO₃ + 2NaOH = Na₂SO₃ + 2H₂O