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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 gas obtained when ammonia burns in an atmosphere of oxygen without any catalyst.
Complete the following equation.
4 NH3 +5O2 →
What important process starts with the reaction in above? Name the catalyst used.
Ammonia gas is passed over heated copper (I) oxide.
Name the gas evolved in each of the following cases :
Ethene undergoes hydrogenation reaction.
Name the following
Basic gas that is used as a refrigerant.
Name the following
Ammonium salt used in explosive.
Give balanced reactions for the following conversion:
Ammonia to nitrogen using an acidic gas.
Give balanced reactions for the following conversion:
Ammonia solution to an amphoteric hydroxide.
Differentiate between:
Reaction of excess ammonia with chlorine and NH3 with excess chlorine
Write the equation for the formation of ammonia by the action of water on magnesium nitride.
