Question

Помогите решить!!!! Срооооооочно

Answer 1

2Ca + O₂ = 2CaO
1)CaO + H₂O = Ca(OH)₂
2)CaO + 2HNO₃ = Ca(NO₃)₂ + H₂O
3)Ca(OH)₂ + 2HNO₃ =  Ca(NO₃)₂ + 2H₂O
4)Ca(OH)₂ + 2HCl =  CaCl₂ + H₂O

1)S + O₂ = SO₂
2)SO₂ + H₂O = H₂SO₃
3)SO₂ + 2NaOH = Na₂SO₃ + H₂O
4)Na₂SO₃  + 2HCl = H₂SO₃ + 2NaCl
5)H₂SO₃ + 2KOH = K₂SO₃ + 2H₂O