1)KOH+HCl=KCl+H₂O
K⁺+OH⁻+H⁺+Cl⁻=K⁺+Cl⁻+H₂O
OH⁻+H⁺=H₂O
3)2KOH+CuSO₄=K₂SO₄+Cu(OH)₂↓
2K⁺+2OH⁺+Cu²⁺+SO₄²⁻=2K⁺+SO₄²⁻+Cu(OH)₂
2OH⁺+Cu²⁺=Cu(OH)₂
5)2KOH+H₂SO₄=K₂SO₄+2H₂O
2K⁺+2OH⁻+2H⁺+SO₄²⁻=2K⁺+SO₄²⁻+2H₂O
OH⁻+H⁺⁻=H₂O
6)KOH+NH₄Cl=KCl+H₂O+NH₃↑
K⁺+OH⁻+NH₄⁺+Cl⁻=K⁺+Cl⁻+H₂O+NH₃
OH⁻+NH₄⁺=H₂O+NH₃
7)2KOH+CO₂=K₂CO₃+H₂O
2K⁺+2OH⁻+CO₂=2K⁺+CO₃²⁻+H₂O
2OH⁻+CO₂=CO₃²⁻+H₂O
10)2KOH+MgCl₂=2KCl+Mg(OH)₂↓
2K⁺+2OH⁻+Mg²⁺+2Cl⁻=2K⁺+2Cl⁻+Mg(OH)₂
2OH⁻+Mg²⁺=Mg(OH)₂
11)2KOH+SO₃=K₂SO₄+H₂O
2K⁺+2OH⁺+SO₃=2K⁺+SO₄²⁻+H₂O
2OH⁺+SO₃=SO₄²⁻+H₂O
12)2KOH+FeSO₄=K₂SO₄+Fe(OH)₂↓
2K⁺+2OH⁻+Fe²⁺+SO₄²⁻=2K⁺+SO₄²⁻+Fe(OH)₂
2OH⁻+Fe²⁺=Fe(OH)₂
Mn^+7 +1ё => Mn^+6 |
2O^-2 - 4ё => O2^0 | 4
2KMnO4 = K2MnO4 + O2 + MnO2