Which of the following cannot give iodometric | vedclass

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(C) In iodometric titrations,an oxidizing agent reacts with iodide ions $(I^-)$ to liberate iodine $(I_2)$,which is then titrated against a standard s

Vedclass · Accepted Answer

$Pb^{2+}$

Vedclass · Answer

(C) In iodometric titrations,an oxidizing agent reacts with iodide ions $(I^-)$ to liberate iodine $(I_2)$,which is then titrated against a standard sodium thiosulfate solution.For a species to participate in an iodometric titration,it must be capable of oxidizing $I^-$ to $I_2$.$Fe^{3+}$,$Cu^{2+}$,and $Ag^{2+}$ act as oxidizing agents and 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; therefore,it cannot undergo iodometric titration.

Which of the following cannot give iodometric titrations?

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