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प्रश्न
Distinguish between the given pair of compounds using the test given within brackets:
Iron (II) sulphate and iron (III) sulphate (using ammonium hydroxide)
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उत्तर १
On addition of ammonium hydroxide to iron sulphate (II), a dirty green precipitate of Fe(OH)2 is formed. A reddish-brown precipitate of Fe(OH)2 is produced when ammonium hydroxide is added to an iron sulphate (III) solution.
उत्तर २
Iron (II) sulphate (Fe2+ ion):
\[\ce{\underset{green}{FeSO4} + 2NH4OH -> \underset{dirty green ppt}{Fe(OH)2↓} + \underset{colourless sol.}{(NH4)2SO4}}\]
Iron (III) salt (Fe3+ ion):
\[\ce{Fe2(SO4)3 + 6NH4OH↓ -> \underset{reddish brown ppt.}{2Fe(OH3)↓} + 3(NH4)2SO4}\]
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संबंधित प्रश्न
Identify the cations in the following case :
NH4OH Solution, when added to the Solution (B), gives white ppt which does not dissolve in excess.
Identify the cations in the following case:
NaOH Solution, when added to Solution (C), gives white ppt which is insoluble in excess
Select from the list the gas that matches the description given in case
[ammonia, ethane, hydrogen chloride, hydrogen sulfide, ethyne]
This gas produces dense white fumes with ammonia gas.
Name the other ion formed when ammonia dissolves in water.
What do you observe when ammonium hydroxide is added to the aqueous solution of FeSO4? Write a balanced equation for this.
What do you observe when ammonium hydroxide is added to the aqueous solution of Iron (III) chloride? Write a balanced equation for this.
What do you observe when ammonium hydroxide is added to the aqueous solution of Lead nitrate? Write a balanced equation for this.
When ammonium hydroxide is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide, giving an inky blue solution. What is the cation [positive ion] present in solution B? what is the probable colour of solution B?
Q. 24
Explain with a diagram the preparation of aqueous ammonia.
