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प्रश्न
How will you distinguish between Ammonium hydroxide and Sodium hydroxide using copper sulphate solution?
उत्तर
Ammonium hydroxide when added to copper sulphate drop-wise forms a pale blue ppt. of copper hydroxide which dissolves in excess of ammonium hydroxide to form a deep blue solution of tetrammine copper sulphate.
CuSO4 + 2NH4OH 
Cu OH2 + NH4 2SO4
pale blue ppt colourless in solution
With excess of NH OH ppt. dissolves
Cu OH2 + NH4 2SO4 + 2NH4OH |Cu NH3 4|SO4 + 4H2O
Tetrammine
Copper II sulphate
Sodium hydroxide when added to copper sulphate drop-wise forms a pale blue ppt. of copper hydroxide which is insoluble in excess of sodium hydroxide solution.
CuSO4 + 2NaOH Cu OH2 + Na2SO4
pale blue ppt colourless
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संबंधित प्रश्न
Using ammonium hydroxide, how would you distinguish between the following pair of ions in solution?
Ferrous ion and Ferric ion.
State what do you observe when:
Ammonium hydroxide is added to iron (III) sulphate solution.
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.
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.
______ is a white precipitate that is soluble in excess of 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.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
