Analytical Chemistry Question 86
Question: In the group III radicals, in place of $ NH_4Cl $ which of the following can be used
[AIIMS 1980, 82; MP PMT 1985]
Options:
A) $ NH_4NO_3 $
B) $ {{(NH_4)}_2}SO_4 $
C) $ {{( NH_4 )}_2}CO_3 $
D) $ NaCl $
Show Answer
Answer:
Correct Answer: A
Solution:
$ NH_4^{+} $ ions are required to supress the ionization of NH4OH but sufficient to precipitate the III group radicals. (NH4)2SO4 can’t be used as $ SO_4^{2-} $ ions will precipitate Ba2+ as BaSO4