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Question
When ammonium hydroxide is added to a solution B, a pale blue precipitate is formed. The pale blue precipitate dissolves in excess of ammonium hydroxide to give an inky blue solution. What is the cation (positive ion) present in solution B? What is the probable colour of solution B?
One Line Answer
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Solution
The cation is Cu2+ ion. Solution B is copper sulphate. It is bright blue in colour.
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