Zadanie 1
a) 2Na+S--->Na2S
b) 2Cu+O2--->2CuO
c) 2Al+3S--->Al2S3
d) Pb+S--->PbS
Pb+2S--->PbS2
e) 4Al+3C--->Al4C3
f) Sn+2S--->SnS2
g) 2P+5S--->P2S5
Zadanie 2
a) Fe2O3 + 3H2---> 2Fe + 3H2O
b) 2FeO + C--->2Fe + CO2
c) Pb3O4+4H2--->3Pb + 4H2O
d) 2Cu2O+C--->4Cu + CO2
e) 2N₂O--->2N₂ + O₂
f) 2NO2--->2NO + O2
Zadanie 3
a) 3S+2Al--->Al2S3
b) PbO2+2H2--->Pb+2H2O
c) P4O10+5C--->P4+5CO2
d) 2H2S+3O2--->2SO2+2H2O
e) NO2+2H2--->N2+2H2O