Q.

According to Arrhenius equation rate constant (k) is equal to Ae−Ea/RT. Which of the following options represent the graph of ln k vs 1T?

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a

b

c

d

answer is A.

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Detailed Solution

According to Arrhenius equation,k=Ae−Ea/RTTaking log on both side ln k=In A−e−Ea/RT⇒ln k=ln A−EaRT⇒ln k=−−EaR×1T+ln A                                          y=mx+cThis equation can be related to equation of straight line as shown above. From the graph, it is very clear that slope of the plot =-EaRand intercept = ln A.
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