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- IIT JAM
- Chemistry (CY)
Whch ofthe following reaction will go faster if the concentration of the nocleophile is raised ? ch hc-0 (i) c hc-s hc he, h,c ch (e)i and i1 (d)1, il and iv (a
whch ofthe following reaction will go faster if the concentration of the nocleophile is raised ? CH HC-0 (I) C HC-S HC HE, H,C CH (e)I and I1 (d)1, Il and IV (a) l and Ill )l and IV tha GJlauina e
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Shreyasi majumdar 1 Best Answer
In option 3, stable carbocation can be formed. So, it will follow SN1, where conc of nucleophile has no effect. Option 2, and 4 gives primary carbocation which is unstable so Sn2 mech will be followed, hence conc of nucleophile if increased will also increase the rate. Option 1 gives both sn1 and sn2, but sn1 is probably favoured in this case, as carbocation (2°), is substantially stable. So, correct ans is option b.