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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.
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उत्तर
\[\ce{\underset{\text{Colourless}}{ZnSO4} + 2NH4OH ->\underset{\text{White, gelatinous ppt.}}{Zn(OH)2\downarrow} + \underset{\text{colourless}}{(NH4)2SO4}}\]
With excess of NH4OH, ppt. dissolves
\[\ce{\underset{Excess}{Zn(OH)2} + 4NH4OH -> \underset{(Colourless solution)}{\underset{Tetra-ammine zinc (II) hydroxide}{[Zn(NH3)4](OH)2}} + 4H2O}\]
संबंधित प्रश्न
How will you distinguish NH4OH solution from NaOH 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 :
How would you distinguish between Zn2+ and Pb2+ using ammonium hydroxide solution?
Identify the cation of the following case:
NaOH solution when added to solution (A) gives a reddish brown precipitate
Identify the cation of the following case:
NH4OH solution when added to solution (B) gives white ppt. which does not dissolve in excess.
Write a balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
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.
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.
A ______ coloured precipitate is formed when ammonium hydroxide is added to a solution of ferrous chloride.
