35. Решение задачки по химии №12514

3. A solution of CuSO4 is poured into one solution, and an ammonia solution of the same salt is poured into the other. When NaOH is added to these solutions, a precipitate is observed only in the first beaker, whereas when H2S is passed through, a precipitate is formed in both beakers. Explain the processes taking place.

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