Răspuns :
K+H2O→KOH+1/2H2 –REACTIA METALELOR ACTIVE CU APA
CaO+H2O→Ca(OH)2-REACTIA OXIZILOR METALICI CU APA
FeCl3+3KOH→Fe(OH)3↓+3KCl-reactia sarurilor cu bazele puternice-metoda de obtinere a bazelor insolubile
CaO+H2O------->Ca(OH)2
2K+2H2O-------->2KOH+2H2
2FeCl3+6H2O----->2Fe(OH)3+3Cl2+3H2
FeCl3+3KOH------->3KCl+Fe(OH)3
2K+2H2O-------->2KOH+2H2
2FeCl3+6H2O----->2Fe(OH)3+3Cl2+3H2
FeCl3+3KOH------->3KCl+Fe(OH)3