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Addition of HBr to 2-pentene gives

Answer» <html><body><p>2-bromopentane only <br/>3-bromopentane only <br/>2-bromopentane and 3-bromopentane<br/>1-bromopentane and 3-bromopentane</p>Solution :Addition of a proton to 2-pentene can give two <a href="https://interviewquestions.tuteehub.com/tag/carbocations-19004" style="font-weight:bold;" target="_blank" title="Click to know more about CARBOCATIONS">CARBOCATIONS</a> (I and II) <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_CHE_02_XI_C13_E20_060_S01.png" width="80%"/> <br/>which are almost equally stable since <a href="https://interviewquestions.tuteehub.com/tag/carbocation-909158" style="font-weight:bold;" target="_blank" title="Click to know more about CARBOCATION">CARBOCATION</a> (I) is stabilized by five (3+2) <a href="https://interviewquestions.tuteehub.com/tag/hyperconjugation-13962" style="font-weight:bold;" target="_blank" title="Click to know more about HYPERCONJUGATION">HYPERCONJUGATION</a> structures and carbocation (II) is stabilized by <a href="https://interviewquestions.tuteehub.com/tag/four-464592" style="font-weight:bold;" target="_blank" title="Click to know more about FOUR">FOUR</a> (2+2) hyperconjugation structures . Therefore , nucleophilic <a href="https://interviewquestions.tuteehub.com/tag/attack-887517" style="font-weight:bold;" target="_blank" title="Click to know more about ATTACK">ATTACK</a> on these gives the coresponding bromoalkanes in almost equal amounts . Of course , the yield of 2-bromopentane will be slightly more than that of 3-bromopentane.</body></html>


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