Addition of excess ammonium hydroxide into copper sulphate solution

State one relevant observation: Addition of excess ammonium hydroxide into copper sulphate solution.

Answer

Inky blue solution / deep blue solution is formed / azure solution/ the precipitate or blue precipitate or pale blue precipitate dissolves, or is soluble / the precipitate or blue
precipitate or pale blue precipitate (dissolves) forms inky blue/ deep blue solution.

• Exam Year: 2020