NCERT Class 12 Chemistry Haloalkanes and Haloarenes

Read and download NCERT Class 12 Chemistry Haloalkanes and Haloarenes in NCERT book for Class 12 Chemistry. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Chemistry textbook for Class 12 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 12 Chemistry to understand the answers of the exercise questions given at the end of this chapter

NCERT Book for Class 12 Chemistry Haloalkanes And Haloarenes

Class 12 Chemistry students should refer to the following NCERT Book Haloalkanes And Haloarenes in Class 12. This NCERT Book for Class 12 Chemistry will be very useful for exams and help you to score good marks

Haloalkanes And Haloarenes NCERT Book Class 12

 

The replacement of hydrogen atom(s) in a hydrocarbon, aliphatic or aromatic, by halogen atom(s) results in the formation of alkyl halide (haloalkane) and aryl halide (haloarene), respectively. Haloalkanes contain halogen atom(s) attached to the sp3 hybridised carbon atom of an alkyl group whereas haloarenes contain halogen atom(s) attached to sp2 hybridised carbon atom(s) of an aryl group. Many halogen containing organic compounds occur in nature and some of these are clinically useful. These classes of compounds find wide applications in industry as well as in day-to-day life. They are used as solvents for relatively non-polar compounds and as starting materials for the synthesis of wide range of organic compounds. Chlorine containing antibiotic, chloramphenicol, produced by soil microorganisms is very effective for the treatment of typhoid fever. Our body produces iodine containing hormone, thyroxine, the deficiency of which causes a disease called goiter. Synthetic halogen compounds, viz. chloroquine is used for the treatment of malaria; halothane is used as an anaesthetic during surgery.

Certain fully fluorinated compounds are being considered as potential blood substitutes in surgery. In this Unit, you will study the important methods of preparation, physical and chemical properties and uses of  organohalogen compounds.
After studying this Unit, you will be able to
• name haloalkanes and haloarenes according to the IUPAC system of nomenclature from their given structures;
• describe the reactions involved in the preparation of haloalkanes and haloarenes and understand various reactions that they undergo;
• correlate the structures of haloalkanes and haloarenes with various types of reactions;
• use stereochemistry as a tool for understanding the reaction mechanism;
• appreciate the applications of organo-metallic compounds;
• highlight the environmental effects of polyhalogen compounds.

Excercise

10.1 Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
(i) (CH3)2CHCH(Cl)CH3 (ii) CH3CH2CH(CH3)CH(C2H5)Cl
(iii) CH3CH2C(CH3)2CH2I (iv) (CH3)3CCH2CH(Br)C6H5
(v) CH3CH(CH3)CH(Br)CH3 (vi) CH3C(C2H5)2CH2Br
(vii) CH3C(Cl)(C2H5)CH2CH3 (viii) CH3CH=C(Cl)CH2CH(CH3)2
(ix) CH3CH=CHC(Br)(CH3)2 (x) p-ClC6H4CH2CH(CH3)2
(xi) m-ClCH2C6H4CH2C(CH3)3 (xii) o-Br-C6H4CH(CH3)CH2CH3
10.2 Give the IUPAC names of the following compounds:
(i) CH3CH(Cl)CH(Br)CH3 (ii) CHF2CBrClF (iii) ClCH2C≡CCH2Br
(iv) (CCl3)3CCl (v) CH3C(p-ClC6H4)2CH(Br)CH3 (vi) (CH3)3CCH=ClC6H4I-p
10.3 Write the structures of the following organic halogen compounds.
(i) 2-Chloro-3-methylpentane (ii) p-Bromochlorobenzene
(iii) 1-Chloro-4-ethylcyclohexane (iv) 2-(2-Chlorophenyl)-1-iodooctane
(v) Perfluorobenzene (vi) 4-tert-Butyl-3-iodoheptane
(vii) 1-Bromo-4-sec-butyl-2-methylbenzene (viii) 1,4-Dibromobut-2-ene

10.4 Which one of the following has the highest dipole moment?
(i) CH2Cl2 (ii) CHCl3 (iii) CCl4
10.5 A hydrocarbon C5H10 does not react with chlorine in dark but gives a single monochloro compound C5H9Cl in bright sunlight. Identify the hydrocarbon.
10.6 Write the isomers of the compound having formula C4H9Br.
10.7 Write the equations for the preparation of 1-iodobutane from
(i) 1-butanol (ii) 1-chlorobutane (iii) but-1-ene.
10.8 What are ambident nucleophiles? Explain with an example.
10.9 Which compound in each of the following pairs will react faster in SN2 reaction with –OH?
(i) CH3Br or CH3I (ii) (CH3)3CCl or CH3Cl
10.10 Predict all the alkenes that would be formed by dehydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
(i) 1-Bromo-1-methylcyclohexane (ii) 2-Chloro-2-methylbutane
(iii) 2,2,3-Trimethyl-3-bromopentane.

Please refer to attached file for NCERT Class 12 Chemistry Haloalkanes and Haloarenes

Unit 06 General Principles and Processes of Isolation of Elements
NCERT Class 12 Chemistry General Principles and Processes of Isolation of Elements
Unit 08 The d- and f-Block Elements
NCERT Class 12 Chemistry The d and f Block Elements
Unit 10 Haloalkanes and Haloarenes
NCERT Class 12 Chemistry Haloalkanes and Haloarenes
Unit 11 Alcohols, Phenols and Ethers
NCERT Class 12 Chemistry Alcohols Phenols and Ethers
Unit 12 Aldehydes, Ketones and Carboxylic Acids
NCERT Class 12 Chemistry Aldehydes Ketones and Carboxylic Acids
Unit 16 Chemistry in Everyday Life
NCERT Class 12 Chemistry Chemistry in Everyday Life

Chemistry NCERT Book Class 12 Haloalkanes And Haloarenes

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NCERT Book Class 12 Chemistry Haloalkanes And Haloarenes

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