3 K2CO3 + Al2(SO4)3 + 3 H2O → 2 Al(OH)3 + 3 K2SO4 + 3 CO2
6К(1+) + 3СО3(2-) + 2Al(3+) + 3SO4(2-) + 3H2O → 2Al(OH)3 + 6K(1+) + 3SO4(2-) + 3CO2
3СО3(2-) + 2Al(3+) + 3H2O → 2Al(OH)3 + 3CO2
HN⁺⁵O₃⁻²→ N⁺⁴O₂+O₂⁰+H₂O
N⁺⁵+e→ N⁺⁴ 1 4
4
2O⁻²-2x2e⁻→ O₂⁰ 4 1
N⁺⁵окислитель
O⁻²восстановитель
4HNO₃= 4NO₂+O₂+2H₂O
Cl₂⁰+KOH→KCl⁺⁵O₃+KCl⁻+H₂O
2Cl⁰-2x5e⁻→2Cl⁺⁵ 10 1
10
2Cl⁰+2xe⁻→2Cl⁻ 2 5
2Cl⁰-2x5e⁻восстановитель
2Cl⁰+2xe⁻ окислитель
3Cl₂+6KOH=KClO₃+5KCl+3H₂O
2Na+2HCl=2NaCl+H2↑
2K+S=K2S
2NaOH+H2SO4=Na2SO4+2H2O
3Na2O+P2O5=2Na3PO4
2Na+3N2=2NaN3
2KOH+H2SO4=K2SO4+2H2O
C2H2 + H2 = C2H4;
C2H4 + H2O = C2H5OH
C2H5OH + O2 = CH3COOH + H2O
CH3COOH + Na = CH3COONa + H
CH3COONa + H2SO4 = CH3COOH + NaHSO4