Analytical Chemistry Question 125
Question: Solution of II A group precipitate in dil. $ HNO_3 $ when treated with $ NH_4OH $ becomes blue because of the presence of
Options:
A) $ Mg $
B) $ Cd $
C) $ Bi $
D) $ Cu $
Show Answer
Answer:
Correct Answer: D
Solution:
$ CuCl_2+2HNO_3\to Cu{{(NO_3)}_2}+2HCl $
$ Cu{{(NO_3)}_2}\text{ reacts with }NH_4OH\text{ and gives}Cu(NH_3)_4^{2+} $ which has deep blue colour.
BETA
