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प्रश्न
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.
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उत्तर
Curdy white precipitate of AgCI formed by reaction between hydrochloric acid and silver nitrate solution, dissolves in excess of NH4OH.
\[\ce{AgNO3 + HCI -> AgCI + HNO3}\]
\[\ce{AgCI+ 2NH4OH -> Ag(NH3)2CI + 2H2O}\]
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संबंधित प्रश्न
Name the method used for preparation of the following salt from the list given below:
Zinc ion and Lead ion.
Fill in the blank.
The salt which will not react with NH4OH solution ______[ZnCl2, CuCl2 / NH4Cl/ FeCl2]
State two relevant observation of the following:
Ammonium hydroxide solution is added to copper (II) nitrate solution in small quantities and then in excess
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.
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.
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.
Write a balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
