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(D) The Arrhenius equation is given by $k = A e^{-E_a / (RT)}$.At infinitely high temperature,i.e.,$T 	o \infty$,the term $\frac{E_a}{RT} 	o 0$.Ther

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$6 	imes 10^5$

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(D) The Arrhenius equation is given by $k = A e^{-E_a / (RT)}$.At infinitely high temperature,i.e.,$T 	o \infty$,the term $\frac{E_a}{RT} 	o 0$.Therefore,the equation becomes $k = A e^0 = A 	imes 1 = A$.Since the Arrhenius factor $A$ is a constant independent of temperature,its value remains the same as the rate constant $k$ at $T 	o \infty$.Given that $k = 6.0 	imes 10^5 \ s^{-1}$ at $300 \ K$,and $A$ is independent of temperature,the value of $A$ is $6.0 	imes 10^5 \ s^{-1}$.

For a reaction,the value of rate constant at $300 \ K$ is $6.0 \times 10^5 \ s^{-1}$. The value of Arrhenius factor $A$ at infinitely high temperature is

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