СaO + 2HCl = CaCl2 + H2O
CuO + 2HCl = CuCl2 + H2O
Al(OH)3 +3 HCl = AlCl3 + 3H2O
NaHCO3 + HCl = NaCl + CO2 + H2O
2Al + 6HCl = 2AlCl3 +3 H2
K2SO3 +2 HCl = 2KCl + SO2 + H2O