NEET Sample Paper NEET Sample Test Paper-81

  • question_answer
    The rate constant, the activation energy and arrhenius parameter of a chemical reaction at \[25{}^\circ C are 3.0 \times 1{{0}^{-}}^{4}{{s}^{-}}^{1}\], \[104.4 kJ mo{{l}^{-}}^{1}\,and 6.0 \times \,\,{{10}^{14}}{{s}^{-}}^{1}\] respectively. The value of rate constant at \[T\to \infty \] is

    A)  \[2.0 \times 1{{0}^{18}}{{s}^{-}}^{1}\]      

    B)  \[6.0 \times 1{{0}^{14}}{{s}^{-}}^{1}\]

    C)  \[\infty \]                                  

    D)  \[3.6 \times 1{{0}^{30}}{{s}^{-}}^{1}\]

    Correct Answer: B

    Solution :

    \[k=A.{{e}^{-\,Ea/RT}}\,\,=\,\,A.e\frac{-{{E}_{a}}}{\infty }\] \[=A=\,\,6\,\,\times \,\,1{{0}^{-}}^{14}{{s}^{-}}^{1}\]


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