Consider the following `S_(N^2)`j reactions I. `RX+Y^(-)toR-Y+X^(-)` II. `RX+Y^(-)toR-Y^(+)+X^(-)` III. `RX^(+)+Y^(-)toR-Y+X` IV. `RX^(+)+YtoR-Y^(+)+X` In which reactions there is large increase and large decrease in rate of reaction respectively with increase in polarity of the solvent.A. II and IIIB. II and IVC. I and IVD. IV and I

Consider the following `S_(N^2)`j reactions I. `RX+Y^(-)toR-Y+X^(-)` I

1.	Consider the following `S_(N^2)`j reactions I. `RX+Y^(-)toR-Y+X^(-)` II. `RX+Y^(-)toR-Y^(+)+X^(-)` III. `RX^(+)+Y^(-)toR-Y+X` IV. `RX^(+)+YtoR-Y^(+)+X` In which reactions there is large increase and large decrease in rate of reaction respectively with increase in polarity of the solvent.A. II and IIIB. II and IVC. I and IVD. IV and I
Answer» Correct Answer - A For II. Transition state is more stabilised than reactant. For III : Reactants are more stabilised than transition state. Hence, rate of reaction is affected accordingly.

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