CuCl2 + H2SO3 = CuSO3(осадок) + 2HCl
Cu2+ + 2Cl- + 2H+ + SO32- = CuSO3 + 2H+ + 2Cl-
Cu2+ + SO32- = CuSO3
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CuCl2 + H2SO3 = CuSO3(осадок) + 2HCl
Cu2+ + 2Cl- + 2H+ + SO32- = CuSO3 + 2H+ + 2Cl-
Cu2+ + SO32- = CuSO3