Alkyl HalidesStereochemistry of SN1 Reaction56Choose the best answerPartial racemization in an SN₁ reaction occurs because:AThe nucleophile attacks only from the leaving-group side.BThe carbocation is tetrahedral.CThe nucleophile can attack both faces of the planar carbocation, often with greater attack from the less hindered opposite face.DThe nucleophile cannot approach the carbocation. Like 0 Discuss 0Share
Alkyl HalidesBond Polarity in Alkyl Halides57Choose the best answerWhich methyl halide has the most polar C–X bond?ACH₃FBCH₃ClCCH₃BrDCH₃I Like 0 Discuss 0Share
Alkyl HalidesIUPAC Nomenclature of Alkyl Halides58Choose the best answerThe correct IUPAC name of diethylbromomethane, (C₂H₅)₂CHBr, is:A1-Bromo-1,1-diethylmethaneB3-BromopentaneC1-Bromo-1-ethylpropaneD1-Bromopentane Like 0 Discuss 0Share
Alkyl HalidesSolvent Effect on SN2 Reaction59Choose the best answerPolar aprotic solvents favor SN₂ reactions because they:AStrongly stabilize carbocations.BStrongly hydrogen-bond to anionic nucleophiles.CSolvate anionic nucleophiles relatively weakly, increasing their reactivity.DConvert nucleophiles into leaving groups. Like 1 Discuss 0Share
Alkyl HalidesReactivity of Alkyl Halides60Choose the best answerThe increasing order of reactivity of methyl halides toward nucleophilic substitution is:ACH₃I < CH₃Br < CH₃Cl < CH₃FBCH₃F < CH₃Cl < CH₃Br < CH₃ICCH₃Br < CH₃Cl < CH₃I < CH₃FDCH₃Cl < CH₃F < CH₃I < CH₃Br Like 1 Discuss 0Share