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प्रश्न
Three test tubes contain calcium nitrate solution, zinc nitrate solution and lead nitrate solution.Describe the effect of Adding ammonium hydroxide to each portion in turn till it is in excess.
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उत्तर
Ammonium Hydroxide :
| Small amount | In excess | |
| Calcium nitrate | No visible reaction | No change |
| Zinc nitrate | White precipitate | Soluble |
| Lead nitrate | White precipitate | Soluble |
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संबंधित प्रश्न
How will you distinguish between Ammonium hydroxide and Sodium hydroxide using copper sulphate 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.
How would you distinguish between Zn2+ and Pb2+ ions, using ammonium hydroxide solution?
Distinguish between the following pair of compound using the test given within bracket.
Iron (II) Sulpate an and iron(III) using ammonium hydroxide)
The following table shows the tests a student performed on four different aqueous solutions which are X,Y,Z and W. Based on the observations provided, Identify the cation present
|
Chemical Test |
Observation | Conclusion |
| To Solution X, ammonium hydroxide is added in minium quantity first and then in excess | A dirty white precipitate is formed which dissolves in excess to form a clear solution | (i) |
| To Solution Y, ammonium hydroxide is added in minimum quantity first and then in excess | A pale blue precipitate is formed which dissolves in excess to form a clear inky blue solution | (ii) |
| To solution W, A small quantity of sodium hydroxide solution is added and then in excess | A white precipitate is formed which remains insoluble | (iii) |
| To a salt Z, calcium hydroxide solution is added and then heated | A pungent smelling gas turning moist red litmus paper blue is obtained | (iv) |
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 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.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
