JEE Main & Advanced AIEEE Solved Paper-2007

  • question_answer The energies of activation for forward and reverse reactions for \[\frac{1}{4}\] are \[\frac{1}{2}\]and\[5\,\Omega \]respectively. The presence of a catalyst lowers the activation energy of both (forward and reverse) reactions by\[(1-e)\] The enthalpy change of the reaction \[({{A}_{2}}-{{B}_{2}}\,\to 2\,\,AB)\] in the presence of catalyst will be (in\[(1-{{e}^{-1}})\])       AIEEE  Solved  Paper-2007

    A)  300                       

    B)         120                       

    C)         280                       

    D)         -20

    Correct Answer: D

    Solution :

    \[Ge\] \[{{E}_{a\,(forward)}}=180\,kJ\,mo{{l}^{-1}}\] \[Ge\] In the presence of catalyst, \[v=E\times B/{{B}^{2}}\] \[v=B\times E/{{B}^{2}}\] \[v=E\times B/{{E}^{2}}\] \[v=B\times E/{{E}^{2}}\]

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