Analytical Chemistry Question 53
Question: Which one of the following can be used in place of $ NH_4Cl $ for the identification of the third group radicals-
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:
[a] As it provides $ N{H^{+}}_4 $ ions which suppresses the ionization of $ NH_4OH $ so that only the group III cations are precipitated as hydroxides because of their low solubility products and $ N{O^{-}}_3 $ ions do not produce precipitate with the cations of IVth, Vth and VIth groups.
BETA
