1. C + O₂ → CO₂
CO₂ + CaO → CaCO3
CaCO₃ + HCl → CaCl₂ + CO₂↑ + H₂O
CaCl₂ + AgNO₃ → Ca(NO₃)₂ + AgCl↓
Ca(NO₃)₂ + K₃PO₄ → Ca₃(PO₄)₂↓ + KNO₃
2. S + O₂ → SO₂↑
SO₂ + H₂O → H₂SO₃
H₂SO₃ → H₂O + SO₂↑ (кат. t°)
SO₂ + CaO → CaSO₃
CaSO₃ + MnSO₄ → CaSO₄ + MnSO₃↓
3. 2Na + 2H₂O → 2NaOH + H₂↑
2NaOH + CaCO₃ → Na₂CO₃ + Ca(OH)₂↓
Na₂CO₃ + 2HCl → 2NaCl + CO₂↑ + H₂O
CO₂ + Ca(OH)₂ → CaCO₃ + H₂O
CaCO₃ + H₃PO₄ → Ca₃(PO₄)₂ + CO₂↑ + H₂O
4. 2Mg + O₂ → 2MgO
MgO + CO₂ → MgCO₃
MgCO₃ → MgO + CO₂↑ + H₂O
MgO + H₂O → Mg(OH)₂
Mg(OH)₂ + MnCl₂ → MgCl₂ + Mn(OH)₂↓
5. 4Al + 3O₂ → 2Al₂O₃
Al₂O₃ + 6HCl → 2AlCl₃ + 3H₂O
AlCl₃ + 3NaOH → Al(OH)₃↓ + 3NaCl
2Al(OH)₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 6H₂O
Al₂(SO₄)₃ + 6NaOH → 2Al(OH)₃↓ + 3Na₂SO₄
6. 4P + 5O₂ → 2P₂O₅
P₂O₅ + 3H₂O → 2H₃PO₄
H₃PO₄ + 3NaOH → Na₃PO₄ + 3H₂O
H₂O + Na₂O → 2NaOH
NaOH + AlPO₄ → Na₃PO₄ + Al(OH)₃↓
7. Si + O₂ → SiO₂↓
SiO₂ + Na₂O → Na₂SiO₃
Na₂SiO₃ + 2HCl → H₂SiO₃ + 2NaCl
H₂SiO₃ → SiO₂↓ + H₂O
SiO₂ + Li₂O → Li₂SiO₃