Some Basic Concepts Of Chemistry Question 244
Question: Which of the following cannot give iodometric titrations [AIIMS 1997]
Options:
A) $ F{e^{3+}} $
B) $ C{u^{2+}} $
C) $ P{b^{2+}} $
D) $ A{g^{+}} $
Show Answer
Answer:
Correct Answer: C
Solution:
Atom in highest oxidation state can oxidize iodide to liberate $ I _2 $ which is volumetrically measured by iodometric titration using hypo. $ 2{I^{-}}\to I _2 $ $ P{b^{+2}}\to $ Lowest oxidation state can not oxidise iodide to $ I _2 $ .
