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

  • question_answer \[KI\] when heated with conc. \[{{H}_{2}}S{{O}_{4}}\] gives [MP PET/PMT 1988]

    A) \[HI\]

    B) \[{{I}_{2}}\]

    C) \[HI{{O}_{3}}\]

    D) \[KI{{O}_{3}}\]

    Correct Answer: B

    Solution :

    \[KI+{{H}_{2}}S{{O}_{4}}\,\xrightarrow{\Delta }\,KHS{{O}_{4}}+HI\] \[{{H}_{2}}S{{O}_{4}}+2HI\,\to \ 2{{H}_{2}}O+\underset{\text{Violet vapour}}{\mathop{{{I}_{2}}+S{{O}_{2}}\uparrow }}\,\]


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