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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Chemical stoichiometry

  • question_answer
    Which of the following cannot give iodometric titrations [AIIMS 1997]

    A)                 \[F{{e}^{3+}}\]

    B)                 \[C{{u}^{2+}}\]

    C)                 \[P{{b}^{2+}}\]

    D)                 \[A{{g}^{+}}\]

    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 \[{{I}_{2}}\].


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