Which of the following cannot give iodometric | vedclass

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(C) Iodometric titration involves the reaction of an oxidizing agent with iodide ions $(I^-)$ to liberate iodine $(I_2)$,which is then titrated agains

Vedclass · Accepted Answer

$Pb^{2+}$

Vedclass · Answer

(C) Iodometric titration involves the reaction of an oxidizing agent with iodide ions $(I^-)$ to liberate iodine $(I_2)$,which is then titrated against a standard sodium thiosulfate solution (hypo).For a species to participate in iodometric titration,it must be capable of oxidizing $I^-$ to $I_2$.$Fe^{3+}$,$Cu^{2+}$,and $Ag^{+}$ are oxidizing agents that can oxidize $I^-$ to $I_2$.$Pb^{2+}$ is in its stable oxidation state and does not act as an oxidizing agent towards iodide ions under these conditions.Therefore,$Pb^{2+}$ cannot give iodometric titrations.

Which of the following cannot give iodometric titrations?

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