JEE Main & Advanced Chemistry The p-block Elements-II Question Bank Halogen Family

  • question_answer Iodine is formed when potassium iodide reacts with a solution of [MNR 1984; MP PET/PMT 1998]

    A) \[ZnS{{O}_{4}}\]

    B) \[CuS{{O}_{4}}\]

    C) \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]

    D) \[N{{a}_{2}}S{{O}_{4}}\]

    Correct Answer: B

    Solution :

    \[CuS{{O}_{4}}+2KI\,\to \,Cu{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\] \[2Cu{{I}_{2}}\,\to \,\underset{\text{Cuprous iodide}\,\,\,\,\,\,\,\,\,\,}{\mathop{2CuI\,\,\,\,\,\,\,+\,\,\,\,\,{{I}_{2}}}}\,\]

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