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प्रश्न
Write the observation for the following :
NH4OH is added first in a small quantity and then in excess to a solution of copper sulphate.
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उत्तर
Dropwise addition of NH4OH:
\[\ce{CuSO4 + 2NH4OH -> \underset{\text{Blue ppt.}}{Cu(OH)2} + (NH4)2SO4}\]
with excess of NH4OH, the precipitate of copper(II) hydroxide dissolves as:
\[\ce{Cu(OH)2 + (NH4)2SO4 + \underset{\text{In excess}}{2NH4OH} -> \underset{\text{Tetrammine copper(II) sulphate}}{[Cu(NH3)4]SO4 + 4H2O}}\]
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संबंधित प्रश्न
How will you distinguish NH4OH solution from NaOH solution?
Name the metal hydroxides which are soluble in ammonium hydroxide solution.
Using ammonium hydroxide, how would you distinguish between the following pair of ions in solution?
Ferrous ion and Ferric ion.
Fill in the blank.
The salt which will not react with NH4OH solution ______[ZnCl2, CuCl2 / NH4Cl/ FeCl2]
Choose the correct answer from the options given below :
Which salt solution is soluble in excess of NH4OH
Choose the correct answer from the options given below :
A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide is :
Write the observation for the following:
NaOH is added drop-wise till in excess to a solution of zinc sulphate.
Write the observation for the following:
Excess NH4OH is added to a substance obtained by adding hydrochloric acid in silver nitrate solution.
Write a balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
A ______ coloured precipitate is formed when ammonium hydroxide is added to a solution of ferrous chloride.
