2Li + S = Li2S
2Li + 2H2O = 2LiOH + H2
Mg + 2HCl = MgCl2 + H2
Ag+H3PO4->не взаимодействуют
Zn + CuO = ZnO + Cu
Fe + H2SO4 = FeSO4 + H2
K + H2O = 2KOH + H2
Al + HCI =2AlCI3 + 3H2
Ba + H20 = Ba(OH)2 + H2↑
2CH4=C2H2+3H2
3C2H2=C6H6
C6H6+cl2=C6H5Cl+HCl
(NH₄)₂CO₃ + 2KOH = K₂CO₃ + 2NH₃ + 2H₂O
2NH₄⁺ + CO₃²⁻ + 2K⁺ + 2OH⁻ = 2K⁺ + CO₃²⁻ + 2NH₃ + 2H₂O
NH₄⁺ + OH⁻ = NH₃ + H₂O
∑=1+1+1+1=4