Question contains Statement-1 and Statement-2 and has the...

Question contains Statement-1 and Statement-2 and has the following choices (a), (b), (c) and (d), out of which ONLY ONE is correct. (a) Statement- 1 is True, Statement- 2 is True; Statement- 2 is a correct explanation for Statement-1 (b) Statement- 1 is True, Statement- 2 is True; Statement- 2 is NOT a correct explanation for Statement-1 (c) Statement- 1 is True, Statement- 2 is False (d) Statement-1 is False, Statement- 2 is True Statement 1 $\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{3}$ is more reactive towards $\mathrm{HBr}$ compared to ethylene. and Statement 2 The carbocation formed in $\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{3}$ during the addition of $\mathrm{HBr}$ is more stabilized compared to the cation formed from ethylene.

Question contains Statement-1 and Statement-2 and has the following choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
(a) Statement- 1 is True, Statement- 2 is True; Statement- 2 is a correct explanation for Statement-1
(b) Statement- 1 is True, Statement- 2 is True; Statement- 2 is NOT a correct explanation for Statement-1
(c) Statement- 1 is True, Statement- 2 is False
(d) Statement-1 is False, Statement- 2 is True
Statement 1
$\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{3}$ is more reactive towards $\mathrm{HBr}$ compared to ethylene.
and
Statement 2
The carbocation formed in $\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{3}$ during the addition of $\mathrm{HBr}$ is more stabilized compared to the cation formed from ethylene.

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Key Concepts

Alkene Reactivity

Alkene reactivity in electrophilic addition is largely determined by the stability of the possible carbocation intermediate. Alkenes that can form more stable intermediates (due to greater alkyl substitution or better hyperconjugative stabilization) tend to react more readily than those forming less stable intermediates.

Carbocation Stability

Carbocation stability is enhanced by factors such as alkyl substitution, which provides electron-donating effects through hyperconjugation and induction. More substituted carbocations are stabilized by these effects, making their formation more favorable and thereby accelerating the overall reaction in electrophilic additions.

Electrophilic Addition Reaction

This concept involves the reaction mechanism where an electrophile, such as H? from HBr, attacks the electron-rich double bond of an alkene. The process typically occurs in two steps: formation of a carbocation intermediate followed by a nucleophilic attack, and the stability of the carbocation directly influences the reaction rate and outcome.

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