Цепочка превращений S+ =SO2
So2+ =SO3
SO3+ = CuSo4
1) O2, O2, Cu(OH)2
2) H2O, H2O, CuO
3) O2, O2, CuO
4) O2, H2O, CuO
5) H2O, O, Cu(OH)2
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