JEE Main & Advanced Chemistry Hydrocarbons Question Bank Critical Thinking

  • question_answer When ethyl alcohol is heated with red phosphorus and HI, then which of the following is formed [Kurukshetra CEE 1998]

    A) \[{{C}_{2}}{{H}_{6}}\]

    B) \[C{{H}_{4}}\]

    C) \[{{C}_{3}}{{H}_{8}}\]

    D) \[{{C}_{2}}{{H}_{4}}\]

    Correct Answer: A

    Solution :

    \[\underset{\text{Ethyl}\,\text{alcohol}}{\mathop{C{{H}_{3}}C{{H}_{2}}-OH}}\,+2HI\xrightarrow{Red\,P}\underset{\text{Ethane}}{\mathop{C{{H}_{3}}-C{{H}_{3}}}}\,+{{H}_{2}}O+{{I}_{2}}\]


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