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प्रश्न
How will you distinguish between Ammonium hydroxide and Sodium hydroxide using copper sulphate solution?
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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
How will you distinguish NH4OH solution from NaOH solution?
Using ammonium hydroxide, how would you distinguish between the following pair of ions in solution?
Ferrous ion and Ferric ion.
Write the observation for the following :
NH4OH is added first in a small quantity and then in excess to a solution of copper sulphate.
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.
Identify the cation of the following case:
NaOH solution when added to solution (A) gives a reddish brown precipitate
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 ______.
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.
Write balanced equation:
Copper sulphate solution with ammoni um hydroxide solution.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
