Question

Ans: D Topic: Generalities, solvent effects Section: 6.13 Difficulty Level: Easy 50) Consider an Sy2 reaction of NaSH in a polar aprotic solvent with (CH),CHCH CH2X. What would be the relative order of reactivity for the following X substituents? LX-1 L. XBr III. X CI IV X = F a)I> II>III> IV b) II>1> IV> IIl c) IV > III> II>I d) III>1> II> IV e) None of these choices Topic: Generalities, solvent effects Section: 6.13 Difficulty Level: Easy 51) Which is the weakest nucleophile in polar aprotic solvents? A)T B) Br D) F E) All of these choices are equally strong nucleoph of the type of solvent used

Answer 1

Answer In SN Reachon CCHCCH CT x is halide x is g0od Leaving g0oup Rate ot Rea Ction is more hen Siae is moxe it fsom Conpound eaisly leaves So, Si2e ordey ot halogens F CI BY < I cmall LOTge So I good Leaving g0up Relabve order ot Reactuig

5) In polar apootic Solvents 7o is the weakest nucleophile Explanaton Generaly F form s hydrogen bonds in Polar aprotic Solvents loan pairs dloe satattacks elechophile ,1t act as (A) weak nu ceo phile
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