NEET Exam > NEET Notes > Chemistry Class 12 > Flashcards: Haloalkanes and Haloarenes
Flashcards: Haloalkanes and Haloarenes
| Download, print and study this document offline |
Please wait while the PDF view is loading
Page 1 Haloalkanes and Haloarenes Flash card Page 2 Haloalkanes and Haloarenes Flash card Chemical Properties of Halo-alkane (Continued) Page 3 Haloalkanes and Haloarenes Flash card Chemical Properties of Halo-alkane (Continued) Chemical Properties of Halo-alkane (Continued) Page 4 Haloalkanes and Haloarenes Flash card Chemical Properties of Halo-alkane (Continued) Chemical Properties of Halo-alkane (Continued) Chemical Properties of Halo-alkane (Continued) Page 5 Haloalkanes and Haloarenes Flash card Chemical Properties of Halo-alkane (Continued) Chemical Properties of Halo-alkane (Continued) Chemical Properties of Halo-alkane (Continued) Chemical Properties of Halo-alkane (Continued)Read More
FAQs on Flashcards: Haloalkanes and Haloarenes
| 1. What's the difference between haloalkanes and haloarenes in CBSE Class 12 Chemistry? |  |
Ans. Haloalkanes are organic compounds where halogen atoms bond to sp³ hybridised carbon in alkyl groups, while haloarenes have halogens attached to sp² hybridised aromatic carbon rings. Haloalkanes are generally more reactive towards nucleophilic substitution reactions, whereas haloarenes are less reactive due to resonance stabilisation of the benzene ring. This fundamental distinction affects their chemical behaviour and reaction mechanisms significantly.
| 2. Why are haloarenes less reactive in nucleophilic substitution compared to haloalkanes? | |
Ans. Haloarenes exhibit lower reactivity because the C-X bond in aromatic rings has partial double-bond character due to resonance with the π-electron system, making the bond stronger and less susceptible to nucleophilic attack. Additionally, the aromatic carbon is sp² hybridised, creating greater s-character and stronger bonding. SN1 and SN2 mechanisms cannot proceed effectively on aromatic rings, requiring harsh conditions like high temperature and pressure instead.
| 3. How do I identify major and minor products in elimination reactions of haloalkanes? | |
Ans. The major product follows Zaitsev's rule: the most substituted alkene forms preferentially because it's most stable. Minor products result from anti-Zaitsev elimination, producing less substituted alkenes. Reaction conditions matter-strong bases like KOH favour elimination, while weak bases favour substitution. Steric hindrance around the β-carbon also influences product distribution in these elimination reactions.
| 4. What's the mechanism behind SN1 and SN2 reactions for haloalkanes, and when does each occur? | |
Ans. SN2 (bimolecular nucleophilic substitution) involves simultaneous bond-breaking and bond-making in one step, occurring with primary haloalkanes and strong nucleophiles, producing inverted stereochemistry. SN1 (unimolecular nucleophilic substitution) proceeds via carbocation intermediate in two steps, favoured by tertiary haloalkanes and weak nucleophiles, resulting in racemic mixtures. Secondary haloalkanes can follow either pathway depending on nucleophile strength and solvent polarity.
| 5. Which haloalkanes and haloarenes are commonly asked in NEET exams, and what reactions should I focus on? | |
Ans. NEET emphasises chlorobenzene, bromobenzene, and alkyl halides in nucleophilic substitution and elimination contexts. Key reactions include SN1/SN2 mechanisms, Wurtz reaction, Grignard reactions with haloalkanes, and nucleophilic aromatic substitution of haloarenes. Refer to flashcards and mind maps on EduRev to master reaction pathways, identify functional group transformations, and practise MCQ tests covering these high-frequency topics for optimal exam preparation.
About this Document
8K Views
4.80/5 Rating
Apr 15, 2026 Last updated
Related Exams
Document Description: Flashcards: Haloalkanes and Haloarenes for NEET 2026 is part of Chemistry Class 12 preparation. The notes and questions for Flashcards: Haloalkanes and Haloarenes have been prepared according to the NEET exam syllabus. Information about Flashcards: Haloalkanes and Haloarenes covers topics like and Flashcards: Haloalkanes and Haloarenes Example, for NEET 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Flashcards: Haloalkanes and Haloarenes.
Introduction of Flashcards: Haloalkanes and Haloarenes in English is available as part of our Chemistry Class 12 for NEET & Flashcards: Haloalkanes and Haloarenes in Hindi for Chemistry Class 12 course. Download more important topics related with notes, lectures and mock test series for NEET Exam by signing up for free. NEET: Flashcards: Haloalkanes and Haloarenes
Description
Flashcards: Haloalkanes & Haloarenes of Chemistry Class 12 covers all the important topics, helping you prepare for the NEET exam on EduRev. Start for free!
Information about Flashcards: Haloalkanes and Haloarenes
In this doc you can find the meaning of Flashcards: Haloalkanes and Haloarenes defined & explained in the simplest way possible. Besides explaining types of Flashcards: Haloalkanes and Haloarenes theory, EduRev gives you an ample number of questions to practice Flashcards: Haloalkanes and Haloarenes tests, examples and also practice NEET tests
Related Searches
Extra Questions, Important questions, Objective type Questions, practice quizzes, shortcuts and tricks, study material, Flashcards: Haloalkanes and Haloarenes, Previous Year Questions with Solutions, Exam, ppt, Sample Paper, mock tests for examination, Viva Questions, Semester Notes, Summary, Flashcards: Haloalkanes and Haloarenes, Free, pdf , MCQs, past year papers, video lectures, Flashcards: Haloalkanes and Haloarenes;