35. Solving a chemistry problem

35. Solving a chemistry problem

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.

Additional information:

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