Advertisements
Advertisements
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.
Advertisements
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
\[\ce{Cu(OH)2 + (NH4)2SO4 + 2NH4OH -> \underset{Deep Blue Solution}{[Cu(NH3)4]SO4} + 4H2O}\]
APPEARS IN
संबंधित प्रश्न
State your observations when ammonium hydroxide solution is added drop by drop and then in excess to the following solution:
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.
On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate however dissolves on addition of excess of ammonia solution. Identify (choose from Na, Al, Zn, Pb, Fe)
Which metal salt solution was used?
Name the metal hydroxides which are insoluble in ammonium hydroxide solution.
Distinguish between the given pair of compounds using the test given within brackets:
A lead salt and a zinc salt (using excess ammonium hydroxide)
State what do you observe when ammonium hydroxide to Iron (III) sulphate solution.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
Write 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.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
