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Question
What happens when ammonia solution is added first dropwise and then in excess to the following solution:
CuSO4
Write a balanced equation for this reaction.
Solution
\[\ce{\underset{\text{blue}}{CuSO4} + 2NH4OH -> \underset{\text{pale blue ppt.}}{Cu(OH)2\downarrow} + \underset{\text{colourless in solution}}{(NH4)2SO4}}\]
With excess of NH4OH , ppt. dissolves
\[\ce{Cu(OH)2 + 4NH4OH -> \underset{(Deep Blue Solution)}{\underset{Tetrammine copper (II) hydroxide}{[Cu(NH3)4](OH2)}} + 4H2O}\]
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RELATED QUESTIONS
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State your observations when ammonium hydroxide solution is added drop by drop and then in excess to each of the following solutions :
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Write the observation, and balanced equation for the following reaction:
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Write the observation for the following :
NH4OH is added first in a small quantity and then in excess to a solution of copper sulphate.
Identify the cation of the following case:
NH4OH solution when added to solution (B) gives white ppt. which does not dissolve in excess.
Write balanced equation:
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Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
