Răspuns:
2K+2H2O→2KOH+H2
Ca+2H2O→Ca(OH)2+H2
2Na+2H2O→2NaOH+H2
Fe+2HCl→FeCl2+H2
Zn+2HCl→ZnCl2+H2
2Al+3H2SO4→Al2(SO4)3+3H2
3Pb(NO3)2+2Al→2Al(NO3)3+3Pb↓
3FeSO4+2Al→Al2(SO4)3+3Fe↓
Cl2+2KI→2KCl+I2
Cl2+2NaBr→2NaCl+2Br
Br2+2LiI→2LiBr+I2
Mg+2HCl→MgCl2+H2↑
2Al+6HCl→2AlCl3+3H2↑
Cu+2AgNO3→Cu(NO3)2+2Ag↓
Explicație:
