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NEET Sample Paper NEET Sample Test Paper-74

  • question_answer
    For a reversible reaction \[{{N}_{2}}\,\,+\,\,{{O}_{2}}\rightleftharpoons \,\,2NO\] Activation energy of the backward reaction is lower than that of forward reaction. The slope of k versus 1/T graph will be

    A)  zero                             

    B)  \[-\frac{H}{2.303\,R}\]

    C)  \[\frac{H}{2.303\,R}\]              

    D)  \[-\frac{\Delta H}{R}\]

    Correct Answer: D

    Solution :

    In \[k=constant=-\frac{\Delta H}{RT}+0\] Compare with \[y =mx + c\] Given,     \[{{E}_{a}}\left( forward \right)>{{E}_{a}}\left( backward \right)\] In endothermic reaction, \[\Delta H>0\] Hence, slope for reaction will be\[-\frac{\Delta H}{R}\].


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