Home › CBSE Class 11 › Chemistry › Alcohols, Phenols and Ethers › Per NCERT §9.3.6 (electrophilic addition mechani…
Per NCERT §9.3.6 (electrophilic addition mechanism), the rate-determining intermediate in HBr + propene addition is which species?
ACarbene
BCarbanion
CFree radical
DCarbocation
Answer & Solution
Correct answer: D. Carbocation
NCERT §9.3.6: H⁺ adds first, generating a carbocation (2° more stable than 1°), then Br⁻ attacks. Polar / ionic mechanism.
Related questions
With which two hydrogen halides is the peroxide effect not observed?Addition anti to Markovnikov rule is known as the peroxide or:Who framed the rule for adding HBr to unsymmetrical alkenes, in 1869?An intermediate conformation between eclipsed and staggered is called:Eclipsed and staggered conformations are represented by Newman and:Across all conformations, what stays the same?How many conformations can an alkane have by rotation about single bonds?Spatial arrangements interconverted by rotation about a single bond are called: