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.
If the file does not open for you, install the Rar archiver program. Inside the archive, the solution is in WORD format.
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