Zn + H2SO4 → ZnSO4 + H2

Na2S + Pb(NO3)2 → PbS + 2 NaNO3

Ca(OH)2 + H2SO4 → 2 H2O + CaSO4

Ba + 2 H2O → Ba(OH)2 + H2

Ag2O + 2 HCl → 2 AgCl + H2O

2 Na + 2 H2O → 2 NaOH + H2

CaCl2 + 2 NaOH → 2 NaCl + Ca(OH)2

3 Zn + 2 H3PO4 → Zn3(PO4)2 + 3 H2

CaO + 2 HCl → CaCl2 + H2O

2 HClO3 → 2 HCl + 3 O2

2 KClO3 → 2 KCl + 3 O2

3 Mg + N2 → Mg3N2

P2O5 + 3 H2O → 2 H3PO4

CH4 + Cl2 → CH3Cl + HCl

C2H4 + H2O → C2H5OH

C10H22 → C5H12 + C5H10

2 C2H5OH + 2 Na → 2 C2H5ONa + H2

(C6H10O5)n + nH2O → nC6H12O6

2 CH3COOH + Ca(OH)2 → (CH3COO)2Ca + 2 H2O