1)
1.CuSO₄+2NaOH=Cu(OH)₂↓+Na₂SO₄
Cu²⁺+SO₄²⁻+2Na⁺+2OH⁻=Cu(OH)₂↓+2Na⁺+SO₄²⁻
Cu²⁺+2OH⁻=Cu(OH)₂↓
2.H₂SO₄+BaCI₂=BaSO₄↓+2HCI
2H⁺+SO₄²⁻+Ba²⁺+2CI⁻=BaSO₄↓+2H⁺+2CI⁻
SO₄²⁻+Ba²⁺=BaSO₄↓
3.Cu(OH)₂+2HCI=CuCI₂+2H₂O
Cu(OH)₂+2H⁺+2CI⁻=Cu²⁺+2CI⁻+2H₂O
Cu(OH)₂+2H⁺=Cu²⁺+2H₂O
4.Na₂CO₃+2HCI=2NaCI+CO₂↑+H₂O
2Na⁺+CO₃²⁻+2H⁺+2CI⁻=2Na⁺+2CI⁻+CO₂↑+H₂O
CO₃²⁻+2H⁺=CO₂↑+H₂O
5. K₂SO₄+Ba(NO₃)₂=BaSO₄↓+2KNO₃
2K⁺+SO₄²⁻+Ba²⁺+2NO₃⁻=BaSO₄↓+2K⁺+2NO₃⁻
SO₄²⁻+Ba²⁺=BaSO₄↓
2)
А) 3Ca²⁺+2PO₄³⁻=Ca₃(PO₄)₂
3CaO+2H₃PO₄=Ca₃(PO₄)₂+3H₂O
3CaF₂+2H₃PO₄=Ca₃(PO₄)₂+6HF
Б)Fe³⁺+3OH⁻=Fe(OH)₃
FeCI₃+3NaOH=Fe(OH)₃+3NaCI
FeF₃+3KOH=Fe(OH)₃+3NaF
В)2H⁺+S²⁻=H₂S
2HCI+Na₂S=H₂S+2NaCI
2HCI+K₂S=H₂S+2KCI
Г)H₂SiO₃+2OH⁻=SiO₃²⁻+H₂O
H₂SiO₃+2NaOH=Na₂SiO₃+H₂O
H₂SiO₃+2KOH=K₂SiO₃+H₂O
Д)Fe(OH)₃+3H⁺=Fe³⁺3H₂O
Fe(OH)₃+3HCI=FeCI₃ +3H₂O
Fe(OH)₃+3HNO₃=Fe(NO)₃ +3H₂O