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प्रश्न
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess:
CuSO4
Write a balanced equation for this reaction.
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उत्तर
\[\ce{\underset{\text{Blue}}{CuSO4} + \underset{\text{colourless}}{2NaOH} -> \underset{\text{Pale blue ppt.}}{Cu(OH)2↓} + \underset{\text{colourless}}{Na2SO4}}\]
In excess of alkali, pale blue precipitate of Cu(OH)2 is insoluble.
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संबंधित प्रश्न
How will you distinguish between Ammonium hydroxide and Sodium hydroxide using copper sulphate solution?
How will you distinguish NH4OH solution from NaOH solution?
Fill in the blank.
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How would you distinguish between Zn2+ and Pb2+ ions, using ammonium hydroxide solution?
State two relevant observations of the following:
Ammonium hydroxide solution is added to zinc nitrate solution in minimum quantities and then in excess.
State what do you observe when ammonium hydroxide to Iron (III) sulphate solution.
Write the observation for the following:
NaOH is added drop-wise till in excess to a solution of zinc sulphate.
Identify the cation of the following case:
NaOH solution when added to solution (A) gives a reddish brown precipitate
Write balanced equation:
Copper sulphate solution with ammoni um hydroxide solution.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
