HCl+CaO= HNO3+NaOH= Cu(OH)2 SO2+H2O=
Реакции.
2HCl+ CaO= CaCl2+ H2O
HNO3+ NaOH= NaNO3+ H2O
Cu(OH)2= CuO+ H2O
SO2+ H2O= H2SO3