MCQ
Which of the following cannot give iodometric titrations
- A$F{e^{3 + }}$
- B$C{u^{2 + }}$
- ✓$P{b^{2 + }}$
- D$A{g^ + }$
✓
Answer
Correct option: C.
$P{b^{2 + }}$
(c) 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 ${I_2}$.
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