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प्रश्न
What would you observe in the following cases:
Ammonium hydroxide is first added in a small quantity and then in excess to a solution of copper sulphate.
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उत्तर
Adding a tiny amount of ammonium hydroxide produces blue precipitates. Excess ammonium hydroxide dissolves blue precipitates, yielding a vivid blue solution.
\[\ce{CuSO4 + 2NH4OH -> \underset{Blue ppt.}{Cu(OH)2}↓ + (NH4)2SO4}\]
In excess
\[\ce{Cu(OH)2 + (NH4)2SO4 + 2NH4OH -> \underset{Deep Blue Solution}{[Cu(NH3)4]SO4} + 4H2O}\]
संबंधित प्रश्न
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.
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.
State two relevant observation of the following:
Ammonium hydroxide solution is added to copper (II) nitrate solution in small quantities and then in excess
How would you distinguish between Zn2+ and Pb2+ using ammonium hydroxide solution?
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.
The salt solution which does not react with ammonium hydroxide is ______.
Write a balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
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.
