P-Block Elements Ques 281
Question: V-A group precipitate was dissolved in $ HNO_3 $ and treated with excess of $ NH_4OH $ . It gives a white ppt. because of
Options:
A) $ Cu{{(OH)}_2} $
B) $ Cd{{(OH)}_2} $
C) $ Bi{{(OH)}_3} $
D) $ Hg{{(OH)}_2} $
Show Answer
Answer:
Correct Answer: C
Solution:
When the black ppt. of $ Bi_2S_3 $ is dissolved in 50% $ HNO_3 $ and a solution of $ NH_4OH $ is added. A white ppt. of $ Bi{{(OH)}_3} $ is obtained.
