Zadanie 5
a) Fe+Cl2--->FeCl2
b) Na2O+H2SO4--->Na2SO4+H2O
c) H2S+CaO--->CaS+H2O
Zadanie 6
a) KOH+HNO3--->KNO3+H2O
2K+2HNO3--->2KNO3+H2
K2O+2HNO3--->2KNO3+H2O
b) NaOH+HCl--->NaCl+H2O
2Na+2HCl--->2NaCl+H2
Na2O+2HCl--->2NaCl+H2O