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Consider the following plots of rate con...

Consider the following plots of rate constant versus `(1)/(T)` for four different reactions. Which of the following orders is correct for the activation energies of these reactions?

A

`E_(b) gt E_(d) gt E_(c)gt E_(a)`

B

`E_(a) gt E_(c) gt E_(d) gt E_(b)`

C

`E_(b) gt E_(a) gt E_(d) gt E_(c)`

D

`E_(c) gt E_(a) gt E_(d) gt E_(b)`

Text Solution

Verified by Experts

The correct Answer is:
D
`k=Ae^(-Ea//RT)`
log k = log `A-(E_(a))/(2.303 RT)," slope "=(-E_(a))/(2.303 R)`
`therefore` In the given graph, greater the slope, more is the `E_(a)`
`therefore "Order "=E_(c) gt E_(a) gt E_(d) gt E_(b)`
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