Analytical Chemistry Question 100
Question: Yellow ammonium sulphide solution is a suitable reagent for the separation of
[BHU 1987]
Options:
A) $ HgS $ and $ PbS $
B) $ PbS $ and $ Bi_2S_3 $
C) $ Bi_2S_3 $ and $ CuS $
D) $ CdS $ and $ As_2S_3 $
Show Answer
Answer:
Correct Answer: D
Solution:
$ C{d^{+2}} $ belongs to IIA group while $ A{s^{+3}} $ to II B. All the sulphides of II B are soluble in yellow ammonium sulphide but those of II A are insoluble.
BETA
