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प्रश्न
What would you observe in the following case:
Ammonium hydroxide is first added in a small quantity and then in excess to a solution of copper sulphate.
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 the relevant observation for the following:
Ammonium hydroxide is first added in a small quantity and then in excess to a solution of copper sulphate.
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उत्तर
On adding a small quantity of ammonium hydroxide to copper sulphate solution, a pale blue precipitate of copper(II) hydroxide is formed. On adding excess ammonium hydroxide, the precipitate dissolves to form a deep/inky blue solution.
\[\ce{CuSO4 + 2NH4OH -> \underset{Blue ppt.}{Cu(OH)2}↓ + (NH4)2SO4}\]
In excess
\[\ce{Cu(OH)2 + (NH4)2SO4 + 2NH4OH -> \underset{Deep Blue Solution}{[Cu(NH3)4]SO4} + 4H2O}\]
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संबंधित प्रश्न
How will you distinguish between Ammonium hydroxide and Sodium hydroxide using copper sulphate solution?
What happens when ammonia solution is added first dropwise and then in excess to the following solution:
CuSO4
Write a balanced equation for this reaction.
Choose the correct answer from the options given below :
Which salt solution is soluble in excess of NH4OH
Distinguish between the given pair of compounds using the test given within brackets:
A lead salt and a zinc salt (using excess ammonium hydroxide)
Write the observation for the following:
NaOH is added drop-wise till in excess to a solution of zinc sulphate.
Write balanced equation copper sulphate solution with ammonium hydroxide solution.
Write a balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
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.
A ______ coloured precipitate is formed when ammonium hydroxide is added to a solution of ferrous chloride.
