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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
Choose the correct answer from the options given below:
A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide is:
1) Calcium chloride
2) Ferrous chloride
3) Ferric chloride
4) Copper chloride
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:
ZnSO4
Write a balanced equation for this reaction.
State what do you observe when:
Ammonium hydroxide is added to iron (III) sulphate 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)
Identify the cation of the following case:
NH4OH solution when added to solution (B) gives white ppt. which does not dissolve in excess.
Identify the cation of the following case:
NaOH solution when added to solution (C) gives white ppt. which insoluble in excess.
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 ammonium hydroxide solution.
