Advertisements
Advertisements
Question
Distinguish between the given pair of compounds using the test given within brackets:
Iron (II) sulphate and iron (III) sulphate (using ammonium hydroxide)
Advertisements
Solution 1
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.
Solution 2
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):
\[\ce{Fe2(SO4)3 + 6NH4OH↓ -> \underset{reddish brown ppt.}{2Fe(OH3)↓} + 3(NH4)2SO4}\]
APPEARS IN
RELATED QUESTIONS
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.
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 Lead nitrate? Write a balanced equation for this.
Why is ammonium hydroxide used in qualitative analysis? Give two equations to justify your answer.
Q. 24
Write a balanced chemical equation for reaction of ammonia with heated copper oxide
Explain with a diagram the preparation of aqueous ammonia.
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.
