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प्रश्न
Write the observation, and balanced equation for the following reaction:
Ammonium hydroxide is added first in a small quantity, and then in excess, to a solution of copper sulphate.
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उत्तर
When ammonium hydroxide is added in small quantity to copper sulphate solution; it gives blue precipitate of Cu(OH)2
\[\ce{\underset{\text{Blue}}{CuSO4} + 2NH4OH ->\underset{\text{Pale blue ppt.}}{Cu(OH)2} + (NH4)2SO4}\]
When ammonium hydroxide is added in excess, the blue precipitate dissolves giving deep blue solution of tetra amine copper sulphate.
\[\ce{Cu(OH)2 + (NH4)2SO4 +\underset{\text{In excess}}{2NH4OH} ->\underset{\text{Tetrammine copper( II)
Sulphate (Deep blue solution)}}{[Cu(NH3)4]SO4} +4H2O}\]
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संबंधित प्रश्न
What happens when ammonia solution is added first dropwise and then in excess to the following solution:
FeCl3
Write a balanced equation for this reaction.
You are provided with PbCO3, ZnCO3 and CaCO3. How will you identify these cations?
State what do you observe when:
Ammonium hydroxide is added to iron (III) sulphate solution.
Distinguish between the given pair of compounds using the test given within brackets:
A lead salt and a zinc salt (using excess ammonium hydroxide)
State what do you observe when ammonium hydroxide to Iron (III) sulphate solution.
How would you distinguish between Zn2+ and Pb2+ using ammonium hydroxide solution?
Identify the cation of the following case:
NH4OH solution when added to solution (B) gives white ppt. which does not dissolve in excess.
The metal hydroxide which reacts with both acids and alkalis to form salt and water is ______.
Rita was given an unknown salt for identification. She prepared a solution of the salt and divided it into two parts.
- To the first part of the salt solution, she added a few drops of ammonium hydroxide and obtained a reddish-brown precipitate.
- To the second part of the salt solution, she added a few drops of silver nitrate solution and obtained a white precipitate.
Name:
- The cation present and
- The anion present in the salt given for identification.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
