Rank the sn2 reaction rate of the following species, from fastest to slowest.
ch3ch2oh
ch3ch2i
ch3ch2cl

CH3CH2OH fastest
CH3CH2CI fast
CH3CH2I slowest
i believe

CH₃CH₂I >  CH₃CH₂Cl > CH₃CH₂OH

Explanation:

SN₂ reaction -

It is the nucleophilic reaction bimolecular , where the nucleophile replaces the leaving group present in the reaction , this is a one step reaction .

The rate of the reaction depends on -

how good is the leaving group , as a good leaving group will immediately leave and the nucleophile can readily attack to form the product . how strong is the nucleophile , as the stronger nucleophile can efficiently attack replaces the leaving group to form the product .

From the question ,

I is the best leaving group , then is Cl and least is OH .

Hence ,

The fastest to slowest rate of reaction is as follows -

CH₃CH₂I >  CH₃CH₂Cl > CH₃CH₂OH

Most likely a is the answer - because  you generate   38 atp's but also consume an atp.   each atp gives approx. less than 4 kcal so probably a is the closest answer.

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