Растворимые
2Na+2H₂O-->2NaOH+H₂
K₂O+H₂O-->2KOH
2Li+2H₂O--->2LiOH+H₂
CaO+H₂O-->Ca(OH)₂
Ba+2H₂O-->Ba(OH)₂+H₂
2K+2H₂O-->2KOH+H₂
Нерастворимые:
2NaOH+ZnCl₂-->Zn(OH)₂+2NaCl
AlCl₃+3KOH-->Al(OH)₃+3KCl
CuSO₄+2NaOH-->Cu(OH)₂+Na₂SO₄
3LiOH+FeCl₃-->Fe(OH)₃+3LiCl
Ni(NO₃)₂+2NaOH-->Ni(OH)₂+2NaNO₃
Mn(NO₃)₂+2NaOH-->Mn(OH)₂+2NaNO₃
CrCl₃+3KOH--->Cr(OH)₃+3KCl