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प्रश्न
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.
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उत्तर
\[\ce{\underset{\text{blue}}{CuSO4} + 2NH4OH -> \underset{\text{pale blue ppt.}}{Cu(OH)2\downarrow} + \underset{\text{colourless in solution}}{(NH4)2SO4}}\]
With excess of NH4OH , ppt. dissolves
\[\ce{Cu(OH)2 + 4NH4OH -> \underset{(Deep Blue Solution)}{\underset{Tetrammine copper (II) hydroxide}{[Cu(NH3)4](OH2)}} + 4H2O}\]
संबंधित प्रश्न
What happens when ammonia solution is added first dropwise and then in excess to the following solution:
ZnSO4
Write a balanced equation for this reaction.
Name the metal hydroxides which are insoluble in ammonium hydroxide solution.
Name the method used for preparation of the following salt from the list given below:
Zinc ion and Lead ion.
Three test tubes contain calcium nitrate solution, zinc nitrate solution and lead nitrate solution.Describe the effect of Adding ammonium hydroxide to each portion in turn till it is in excess.
State two relevant observations of the following:
Ammonium hydroxide solution is added to zinc nitrate solution in minimum quantities and then in excess.
Write the observation for the following:
NaOH is added drop-wise till in excess to a solution of zinc sulphate.
Identify the cation of the following case:
NaOH solution when added to solution (A) gives a reddish brown precipitate
The salt solution which does not react with ammonium hydroxide is ______.
Identify the cation in the following case:
Ammonium hydroxide solution when added to Solution B gives a white precipitate which does not dissolve in excess of ammonium hydroxide solution.
The metal hydroxide which reacts with both acids and alkalis to form salt and water is ______.
