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प्रश्न
A white solid A when heated with sodium hydroxide solution, gives a pungent gas B, which turns red litmus blue. The solid, when dissolved in dilute nitric acid and treated with silver nitrate gives a white precipitate of C which is soluble in an ammonia solution.
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उत्तर
C is silver chloride which is soluble in ammonia.
Pungent smelling gas B is ammonia.
White solid A is ammonium chloride.
\[\ce{NH4Cl(s) ->[NaOH] NH3(g) + H2O + NaCl}\]
\[\ce{NH3(g) ->[Red litmus] blue litmus}\]
\[\ce{\underset{\text{A}}{NH4Cl(s)} ->[AgNO3][HNO3] \underset{\text{C}}{AgCl(s)}}\]
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संबंधित प्रश्न
What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:
Pb(NO3)2
Write balanced equation for this reaction.
Name the chloride of a metal which is soluble in excess of ammonium hydroxide. Write equation for the same.
Name a yellow monoxide that dissolves in hot and concentrated caustic alkali.
Distinguish by adding:
(a) sodium hydroxide solution and
(b) Ammonium hydroxide solution to
(i) Calcium salt solution and lead salt solution
(ii) Lead salt solution and ferrous salt solution
(iii) copper salt solution and ferrous salt solution
(iv) Fe (II) salt solution and Fe (III) Salt solution
(v) Ferrous nitrate and lead nitrate
Name a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.
Using sodium hydroxide solution, how will you distinguish:
Iron (II) chloride from iron (III) chloride
State what do you observe when:
Neutral litmus solution is added to alkaline solution
Using Sodium hydroxide solution, how would you distinguish: Zinc nitrate solution from calcium nitrate 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 calcium salt solution and lead salt solution.
