Chemical Kinetics - Result Question 65
####65. The rate constant for the first order decomposition of a certain reaction is described by the equation
$$ \log k\left(s^{-1}\right)=14.34-\frac{1.25 \times 10^{4} K}{T} $$
(i) What is the energy of activation for the reaction?
(ii) At what temperature will its half-life period be $256 min$ ?
(1997, 5M)
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Answer:
Correct Answer: 65. $\left(3.56 \times 10^{-16} g\right)$
Solution:
- (i) The Arrhenius equation is
$$ \log k=\log A-\frac{E _a}{2.303 R T} $$
Comparing with the given equation :
$$
