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how do polar solvents help in the first step in SN1 mechanism

how do polar solvents help in the first step in SN1 mechanism
 

Grade:12

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
9 years ago
TheSN1 reactionis asubstitution reactioninorganic chemistry. "SN" stands fornucleophilic substitutionand the "1" represents the fact that therate-determining stepisunimolecular.
An example of a reaction taking place with an SN1reaction mechanismis thehydrolysisoftert-butyl bromidewith water formingtert-butanol:

204-1015_506px-ReakcjaSn1hydrolizabromkutertbutylowego.svg.png

solvent stabilises the transition state more than the reactant thus lowers the energy of activation and speed up the reaction.in an sn1 reaction the substrate molecule does not fall apart it is pulled apart by the solvent molecule.

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