For the reaction A(g) <=> 2B(g) , the backward reaction rate constant is higher than the forward reaction rate constant by a factor of 2500, at 1000 K. [Given : R = 0.0831 L atm mol -1 K -1 ] Kp for the reaction at 1000 K is

1. A. 0.021
2. B. 83.1
3. C. 2.077 10 5
4. D. 0.033

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