Хим.реакции: 1) Hcl+cuo, 2) hcl+caso3, 3)hcl+cuso4.
CuO + 2HCl = CuCl2 + H2O
CaSO3 +2 HCl = CaCl2 + SO2 + H2O
CuSO4 + 2HCl = CuCl2 + H2SO4