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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
Write balanced chemical equations for the following:
An equation to illustrate the reducing nature of ammonia.
Identify the substance underlined:
The catalyst used to oxide ammonia.
Copy and complete the following table which refers to the industrial method for the preparation of ammonia and sulphuric acid:
| Name of the compoun | Name of the process | Catalytic equation (with the catalyst) |
| Ammonia | (i)__________ | (ii) __________ |
| Sulhuric acid | (iii) ___________ | (iv) __________ |
Write a balanced chemical equation for the following:
When an excess of ammonia is treated with chlorine.
Give balanced reactions for the following conversion:
Ammonia to nitrogen using an acidic gas.
Give balanced equation to prove that ammonia Has the element hydrogen in it.
Complete and balance the equation: CuO(heated) + NH3 →
Give a balanced chemical equation for the following:
Reaction of ammonia with excess of chlorine.
