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प्रश्न
Distinguish between the following pair of compounds using the test given within bracket.
A lead salt and a zinc salt (using excess ammonium hydroxide)
उत्तर
A lead salt and a zinc salt (using excess \[\ce{NH4OH}\])
\[\ce{pb(NO3)2 + 2NH4OH -> \underset{Chalky white ppt}{pb(OH)2↓} + 3(NH4)2SO4}\]
Insoluble in excess of \[\ce{NH4OH}\]
\[\ce{ZnSO4 + 2NH4OH -> \underset{White gelatinous ppt}{Zn(OH)2↓} + (NH4)2SO4}\]
With the excess of \[\ce{NH4OH}\] ppt. dissolves
\[\ce{Zn(OH)2 + (NH4)2SO4 + 2NH4OH -> \underset{Tetra amine zinc sulphate}{[Zn(NH3)4]SO4} + 4H2O}\]
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संबंधित प्रश्न
State your observations when ammonium hydroxide solution is added drop by drop and then in excess to each of the following solutions :
1) Copper sulphate solution
2) Zinc sulfate 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.
What happens when ammonia solution is added first dropwise and then in excess to the following solution:
FeCl3
Write a balanced equation for this reaction.
Name the method used for preparation of the following salt from the list given below:
Zinc ion and Lead ion.
How would you distinguish between Zn2+ and Pb2+ ions, using ammonium hydroxide solution?
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 :
NH4OH is added first in a small quantity and then in excess to a solution of copper sulphate.
Identify the cation of the following case:
NaOH solution when added to solution (C) gives white ppt. which insoluble in excess.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
