Question

Осуществите цепочки превращений
S⇒S02⇒H2SO3⇒Na2SO3
Ca⇒CaO⇒Ca(OH)2⇒Cacl2

Answer 1

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Answer 2

S + O₂ = SO₂

SO₂ + H₂O ⇄ H₂SO₃

H₂SO₃ + 2NaOH = Na₂SO₃ + 2H₂O

2Ca + O₂ = 2CaO

CaO + H₂O = Ca(OH)₂

Ca(OH)₂ + 2HCl = CaCl₂ + 2H₂O