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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):
\[\ce{Fe2(SO4)3 + 6NH4OH↓ -> \underset{reddish brown ppt.}{2Fe(OH3)↓} + 3(NH4)2SO4}\]
संबंधित प्रश्न
Ammonia gas is collected by ______.
State your observation When calcium hydroxide is heated with ammonium chloride crystals.
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.
What do you observe when ammonium hydroxide is added to the aqueous solution of Zinc nitrate? Write a balanced equation for this.
Why is ammonium hydroxide used in qualitative analysis? Give two equations to justify your answer.
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
Distinguish by a chemical test, sulphuric acid from nitric acid and hydrochloric acid.
State your observation when lead nitrate solution and sodium chloride solution are mixed.
