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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.
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उत्तर
When NH4OH is added to copper sulphate solution drop-wise, a pale blue ppt. is obtained.
CuSO4 + 2NH4OH 
Cu(OH)2 + (NH4)2SO4 + 4H2O
With the excess of NH4OH, the ppt. dissolves to give a deep blue solution of tetraamine copper(II)sulphate
Cu(OH)2 + (NH4)2SO4 + 2NH4OH [Cu(NH3)4]SO4 + 4H2O
2) When NH4OH is added to zinc sulphate solution drop-wise, a white, gelatinous ppt. is obtained.
ZnSO4 + 2NH4OH Zn(OH)2 + (NH4)2SO4
With the excess of NH4OH, the ppt. dissolves to give a colorless solution of tetraamine zinc(II)sulphate.
Zn(OH)2 + (NH4)2SO4 + 2NH4OH [Zn(NH3)4]SO4 + 4H2O
संबंधित प्रश्न
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.
Distinguish between the following pair of compound using the test given within bracket.
Iron (II) Sulpate an and iron(III) using ammonium hydroxide)
Write balanced equation copper sulphate solution with ammonium hydroxide solution.
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.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
______ is a white precipitate that is soluble in excess of Ammonium hydroxide solution.
Write balanced equation :
Copper sulphate solution with ammonium hydroxide solution.
The metal hydroxide which reacts with both acids and alkalis to form salt and water is ______.
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.
Write balanced equation:
Copper sulphate solution with ammoni um hydroxide solution.
