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प्रश्न
Using ammonium hydroxide, how would you distinguish between the following pair of ions in solution?
Ferrous ion and Ferric ion.
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उत्तर
Ferrous ion and Ferric ion
(i) \[\ce{FeSO4 + 2NH4OH -> Fe(OH)2 v + (NH4)2SO4}\]
Fe(OH)2 forms dirty green precipitates.
(ii) \[\ce{Fe2(SO4)3 + 6NH4OH -> 2Fe(OH)3 v + 3(NH4)2SO4}\]
Fe(OH)3 forms reddish brown precipitates.
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संबंधित प्रश्न
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.
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Which metal salt solution was used?
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Write the observation, and balanced equation for the following reaction:
Excess of ammonium hydroxide is added to a substance, obtained by adding hydrochloric acid to silver nitrate solution.
How would you distinguish between Zn2+ and Pb2+ using ammonium hydroxide solution?
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:
Excess NH4OH is added to a substance obtained by adding hydrochloric acid in silver nitrate solution.
What would you observe in the following cases:
Ammonium hydroxide is first added in a small quantity and then in excess to a solution of copper sulphate.
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.
Rita was given an unknown salt for identification. She prepared a solution of the salt and divided it into two parts.
- To the first part of the salt solution, she added a few drops of ammonium hydroxide and obtained a reddish-brown precipitate.
- To the second part of the salt solution, she added a few drops of silver nitrate solution and obtained a white precipitate.
Name:
- The cation present and
- The anion present in the salt given for identification.
