2KOH+SO₃=K₂SO₄+H₂O
2K⁺+2OH⁻+SO₃=2K⁺+SO₄²⁻+H₂O
2OH⁻+SO₃=SO₄²⁻+H₂O
2KOH+H₂SO₄=K₂SO₄+2H₂O
2K⁺+2OH⁻+2H⁺+SO₄²⁻=2K⁺+SO₄²⁻+2H₂O
2OH⁻+2H⁺=2H₂O
2KOH+AI₂O₃=2KAIO₂+H₂O при сплавлении t=900°-1100°C
2K⁺+2OH⁻+AI₂O₃=2K⁺+2AIO₂⁻+H₂O
2OH⁻+AI₂O₃=2AIO₂⁻+H₂O
KOH(конц.)+AI(OH)₃=K[AI(OH)₄]
K⁺+OH⁻+AI(OH)₃=K⁺+[AI(OH)₄]⁻
OH⁻+AI(OH)₃=[AI(OH)₄]⁻
KOH(разб.)+AI(OH)₃=KAIO₂+H₂O
K⁺+OH⁻+AI(OH)₃=K⁺+AIO₂⁻+2H₂O
OH⁻+AI(OH)₃= AIO₂⁻+2H₂O
Cu(OH)₂+t°C=CuO+H₂O
Cu(OH)₂+2HCI=CuCI₂+2H₂O
Cu(OH)₂+2H⁺+2CI⁻=Cu²⁺+2CI⁻+2H₂O
Cu(OH)₂+2H⁺=Cu²⁺+2H₂O
Cu(OH)₂+2NaOH=Na₂[Cu(OH)₄]
Cu(OH)₂+2Na⁺+2OH⁻=2Na⁺+[Cu(OH)₄]²⁻
Cu(OH)₂+2OH⁻=[Cu(OH)₄]²⁻
Cu(OH)₂+4NH₃=[Cu(NH₃)₄](OH)₂
4Cu(OH)₂+O₂=2Cu₂O₃↓+2H₂O
2K₂HPO₄+3Ba(OH)₂=4KOH+Ba₃(PO₄)₂+2H₂O
4К+2HPO4+3Ba+6OH=4K+4OH+Ba₃(PO₄)₂+2H₂O
4K-сокращ
сумма =18