When a salt is treated with sodium hydroxide solution it gives gas X. On passing gas X through reagent Y a brown coloured precipitate is formed.

X and Y respectively, are

Question

When a salt is treated with sodium hydroxide solution it gives gas X. On passing gas X through reagent Y a brown coloured precipitate is formed.

X and Y respectively, are

Canvas Classes · Accepted Answer

Step 1: Identify gas X

A salt treated with NaOH solution gives gas X. If the salt is an ammonium salt:

Gas X =  (ammonia — pungent smell, turns moist red litmus blue)

Step 2: Identify reagent Y (Nessler's reagent)

Nessler's reagent =  in KOH (alkaline solution)

When  is passed through Nessler's reagent:

The product  (iodide of Millon's base) is a brown precipitate ✓

Step 3: Conclusion

X = , Y =  in KOH (Nessler's reagent)

Answer: (b)

More questions from P Block (Class 11)