The relative rate of SN2 reaction is given in parenthesis
Rationalised 2023-24
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Chemistry
Step I is the slowest and reversible It involves the C–Br bond breaking for which the
energy is obtained through solvation of halide ion with the proton of protic solvent Since
the rate of reaction depends upon the slowest step, the rate of reaction depends only on the
concentration of alkyl halide and not on the concentration of hydroxide ion Further, greater
the stability of carbocation, greater will be its ease of formation from alkyl halide and faster
will be the rate of reaction