Question

Incorrect Mark 0.00 out of 0.30 P Flag question Which of the following addition reactions is the fastest? Select one: HBC HBC HB- ome ome Her Be

Answer 1

Question is solved using concept of stability of carbocations. As order of stability of carbocation is

Aromatic>Miscellaneous>Substituted>resonance>Hyperconjugation>positive inductive effect>%S character>antiaromatic.

Solution - - The given suoclone are example of eledrophilic addition reaction which proceed through formation of Cambocation - hence in which canocation is more stable that form fast. VINNU VV M +H + í I In i Nt No of an eft Tmoguusfallet → Carbocation stablized 6 W No.0/d4 z 5 Iless stable) ® C A o no , sebebded by 이아내 8 Cronstable) Carboration is stablized by th effect noofd the lace) wooden zu o ofart 24 Cless stable Substituted caubocation Subotitected carbocal fou is most & table than dy stabliud (0) +I stablized.

12112212 Heuce in sceaction © Substituted earlbocation formed also Nucleophilicity of given alkuue is maximum in reaction c due to th effect of one on double bond (conjugated with leau pair of oxygen) hence reaction thered occur fastly.