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Q.

The rate constant, the activation energy and the frequency factor of a chemical reaction at 25° C are $3.0 \times 10^{- 4} s^{- 1}, 104.4 k J {mol}^{- 1} and 6.0 \times 10^{14} g^{- 1}$ respectively
The value of the rate constant as $T ⟶ \infty$ is :

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a

$2.0 \times 10^{18} s^{- 1}$

b

$6.0 \times 10^{14} s^{- 1}$

c

infinite

d

$3.6 \times 10^{30} s^{- 1}$

answer is B.

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Detailed Solution

Given

Rate constant $K = 3.0 \times 10^{- 4} s^{- 1}$

Activation energy $E_{a} = 104.4 k J {mol}^{- 1}$

Frequency factor $A = 6.0 \times 10^{14} g^{- 1}$

The value of the rate constant as $T ⟶ \infty$ is :

$lim_{T \to \infty} k = A$

$= 6.0 \times 10^{14} s^{- 1}$

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The rate constant, the activation energy and the frequency factor of a chemical reaction at 25° C are 3.0×10−4s−1,104.4k J mol−1 and 6.0×1014g−1 respectivelyThe value of the rate constant as T⟶∞ is :