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In a Sn1 reaction, why would the reaction rate increase with an increase in the solvent...

In a Sn1 reaction, why would the reaction rate increase with an increase in the solvent polatiry?

Also, what would be the affect of halide concentration of the reaction rate of an An1 reaction and why? Thank you!

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Answer #1

Greater the polarity solvent, greater is the interactions of H+ of protic solvent and Nucleophile of alkyl halides.

And it can easily departs the alkyl part and forms carbocation readily.

Concentration of alkyl halides increases the rate of reaction since greater the concentration of R-X greater are the interactions with polar protic solvent and ease of formation of carbocation is also more.

Since it is SN1 reaction rate depends only on alkyl halide concentration.

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