Chemical Kinetics Result Question 14
Choose the correct option.
(a) Both I and II are wrong
(b) Both I and II are correct
(c) I is wrong but II is right
(d) I is right but II is wrong
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Answer:
Correct Answer: 14. ( b )
Solution:
- The Arrhenius equation is,
$ k \quad A . e^{E _a / R T} $
where, $k$ rate constant,
A Arrhenius constant, $E _a \quad$ activation energy, and $T$ temperature in $\mathrm{K}$
From the equation, it is clear that $k$ decreases exponentially with $E _a$. So, the plot-I is correct.
In the plot-II, $k$ is plotted with temperature (in ${ }^{\circ} \mathrm{C}$ but not in $\mathrm{K}$ ). So, at $0^{\circ} \mathrm{C}, k \quad 0$ and $k$ will increase exponentially with temperature upto $300^{\circ} \mathrm{C}$. Therefore, the plot-II is also correct.
BETA
