The rate constant, the activation energy and the Arrhenius parameter of a chemical reaction at 25∘C are x,10xkJ/mol and 2xs−1. The value of the rate constant as T→∞ is:
A
xs−1
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B
2xs−1
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C
∞
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D
10xs−1
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Solution
The correct option is B2xs−1 A change in temperature changes only the rate constant of the reaction whilst other parameters like activation energy and arrhenius parameter remain the same. At 25oC, Rate constant k=Ae−EaRT x=2xe−10xR×298 At T=∞ k=2xe−EaR∞=2xs−1 (T→∞, 1T→0)