Răspuns:
a) 3 Fe + 2O2 => Fe3O4
b) 2Na + Cl2 => 2NaCl
c) 2Cu + O2 => 2CuO
d) CaO + H2O => Ca(OH)2
e) N2 + 3H2 => 2NH3
f) H2 + Cl2 => 2HCl
