Which of the following factors has no effect on the rate of SN1 reactions?a. the nature of the alkyl halide. b. the nature of the leaving group c. the concentration of the alkyl halide d. the concentration of the nucleophile e. the value of the rate constant

the concentration of the nucleophile

Explanation:

In an SN1 mechanism, the rate determining step is the formation of the carbocation. The nucleophile does not appear in the rate equation because the rate determining step is unimolecular and entirely depends on the concentration of the alkyl halide.

Hence, the concentration of the nucleophile has no effect on the rate of an SN1 reaction because the rate determining step involves only the alkyl halide.