Short answerEasy1 mark
1(b)
State one relevant observation for each of the following reactions:
Addition of excess ammonium hydroxide into copper sulphate solution.
Topic: Qualitative analysis using NaOH and NH₄OH
Previous-year question practice database
Answer
Exam answer
A pale-blue precipitate first forms and dissolves in excess NH₄OH to give a deep inky-blue solution.
More from Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide
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