Ch_322a_6.019

Ch_322a_6.019 - Solvent Effects on the SN1 Reaction Solvent...

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Solvent Effects on the S N 1 Reaction Solvent polarity typically influences the rate of chemical reactions where the starting and transition states differ significantly in polar character . The S N 1 reaction usually has a transition state that is much more polar than the starting state. CH 3 -C CH 3 CH 3 Cl CH 3 -C CH 3 CH 3 Cl ! + !" starting state charges are being formed in the TS More Polar Less Polar To determine how a change in solvent affects the rate of a reaction, it is necessary to determine the change in energy on both the starting and transition states. If the solvent change decreases the ! G , the rate increases.
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When there is a change from a less polar to a more polar solvent , the rate of an S N 1 reaction generally increases because the energy of the more polar transition state decreases more than the energy of the less polar starting state. R-Cl
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This note was uploaded on 07/22/2009 for the course CHEM 322AL taught by Professor Jung during the Summer '07 term at USC.

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Ch_322a_6.019 - Solvent Effects on the SN1 Reaction Solvent...

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