Draw an energy profile diagram for a three step-reaction in which first step is slowest and last step is fastest. (Assume that reaction is exothermic)

Options

A.
B.
C.
D. None of these

Answer

C

Explanation

Acc. to Arrehenious equation `K = Ae^(-E_(a)//RT)`
`therefore` greater is `E_(a)`, the smaller is K i.e., rate of reaction `prop (1)/("height of energy barrier")`
It should be noted that step leading to the height peak will not be rate determining step if the concentration used in some other step is sufficiency high. Since first step is rate determining step.
`therefore` First peak should be high as is (c).