Chemistry
The questions below refers to the following salt solutions listed A to F:
A: Copper nitrate
B: Iron [II] sulphate
C: Iron [III] chloride
D: Lead nitrate
E: Magnesium sulphate
F: Zinc chloride
(i) Which soln. becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it.
(ii) Which solution gives a white precipitate with excess ammonium hydroxide solution.
Ammonium Hydroxide
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Answer
(i) A: Copper nitrate becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it.
(ii) D: Lead nitrate gives a white precipitate with excess ammonium hydroxide solution.
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- lead nitrate
- iron [III] sulphate
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(ii) the nature of the precipitate [i.e. soluble or insoluble] when NaOH is added in excess.
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