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प्रश्न
Name the chloride of a metal which is soluble in excess of ammonium hydroxide. Write equation for the same.
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उत्तर १
Zinc chloride (ZnCl2) is soluble in excess of ammonium hydroxide.
\[\ce{\underset{\text{colourless}}{ZnCl2} + 2NH4OH -> \underset{\text{white gelatinous ppt.}}{Zn(OH)2↓} + 2NH4Cl}\]
With excess of NH4OH ppt dissolves
\[\ce{Zn(OH)2 + 2NH4Cl + 2NH4OH(excess) -> \underset{\text{Tetrammine zinc(ll)chloride colourless}}{[Zn(NH3)4]Cl2 + 4H2O}}\]
उत्तर २
It is silver chloride [AgCl] dissolves in excess of NH4OH.
A product formed is [Ag(NH3)2]Cl [Soluble colourless Diamine Argentous (Z) chloride]
संबंधित प्रश्न
Identify the cations in the following case:
NaOH solution, when added to the Solution (A), gives a reddish brown precipitate
Using sodium hydroxide solution, how will you distinguish: Zinc nitrate solution from calcium nitrate solution
Sodium hydroxide solution is added to solution A. A white precipitate is formed which is soluble in excess sodium hydroxide. Name the metal ion present in A.
Identify the substance Q based on the information given below:
The white crystalline solid Q is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.
Choose the correct answer from the options given below :
Hydroxide of this metal is soluble is sodium hydroxide solution
Sodium hydroxide solution is added to the solutions containing the ions mentioned in List X. List Y gives the details of the precipitate. Match the ions with their coloured precipitates.
| List X | List Y |
| (i) Pb2+ | (A) Reddish Brown |
| (ii) Fe2+ | (B) White insoluble inexcess |
| (iii) Zn2+ | (C) Dirty green |
| (iv) Fe3+ | (D) White soluble in excess |
| (v) Cu2+ | (E) White soluble in excess |
| (vi) Ca2+ | (F) Blue |
Distinguish by adding:
Sodium hydroxide solution and ammonium hydroxide solution to lead nitrate solution and zinc nitrate solution.
Identify the cation in the following case:
Sodium hydroxide solution when added to Solution C gives a white precipitate which is insoluble in excess of sodium hydroxide solution.
State one relevant observation for the following:
To the copper nitrate solution, initially, few drops of sodium hydroxide solution is added and then added in excess.
Aqueous lead (II) nitrate can be distinguished from aqueous zinc nitrate by adding any of the following solutions in excess, except:
