JEE Main & Advanced JEE Main Paper (Held On 10-Jan-2019 Evening)

  • question_answer
    Among the following reactions of hydrogen with halogens, the one that requires a catalyst is [JEE Main Online Paper (Held On 10-Jan-2019 Evening]

    A) \[{{H}_{2}}+B{{r}_{2}}\to 2HBr\]                  

    B) \[{{H}_{2}}+C{{l}_{2}}\to 2HCl\]

    C) \[{{H}_{2}}+{{F}_{2}}\to 2HF\]                     

    D) \[{{H}_{2}}+{{I}_{2}}\to 2HI\]

    Correct Answer: D

    Solution :

    \[{{H}_{2}}+{{I}_{2}}\rightleftharpoons \text{ }2HI\] In this reaction catalyst is required because \[{{I}_{2}}\] is a less reactive.


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