July 2022 1 52 Report
Составьте уравнения реакций, соответствующих схеме превращений:

S → H2S → Na2S → PbS → SO2 → SO3 → H2SO4 → CuSO4

Для последней реакции укажите цвет образовавшегося раствора.



помогите , пожалуйста​
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