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प्रश्न
Why is ammonium hydroxide used in qualitative analysis? Give two equations to justify your answer.
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उत्तर
Ammonium hydroxide precipitates hydroxides of metals when it is added to aqueous solution of their salts. The precipitate of metal hydroxides differ in colour and solubility and hence ammonium hydroxide is used in qualitative analysis.
(i) FeSO4 +2NH4OH → (NH4)2SO4 +Fe(OH)3
The colour of precipitate is dirty green, which is insoluble in excess of
ammonium hydroxide.
(ii) CuSO4 + 2NH4OH → (NH4)2SO4 + Cu (OH)2
The colour of precipitate is bluish white, which is soluble in excess of ammonium hydroxide.
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संबंधित प्रश्न
Name the following
Gas obtained by treating chlorine in excess of ammonia.
Name the following
Indicator that turns deep pink when treated with NH4OH.
Name the following
Solution used to remove fat grease.
Give balanced equation to prove that ammonia Has the element nitrogen in it.
Describe all what you will observe and write chemical equation, when limited amount of ammonia gas is passed through the following aqueous solution:
FeSO4
Choose the correct answer from the options given below :
Ammonia reacts with excess chlorine to form
(a) Name the catalyst used in 1(ii)
(b) In the reaction referred to in 1(ii), the catalyst glows red hot. Why?
(c) What is the name of the industrial process which starts with the reaction reffered to in 1 (ii)?
The catalyst used in the oxidation of ammonia is ______.
A compound which undergoes thermal dissociation.
