HALOALKANES HALOARENES NOTES PDF

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Download revision notes for Haloalkanes and Haloarenes class 12 Notes and score high in exams. These are the Haloalkanes and Haloarenes class 12 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter 10 in minutes. Revision notes in exam days is one of the best tips recommended by teachers during exam days.

Balz — Schiemann reaction:. Melting and boiling points of haloarenes i. Melting and boiling points of haloarenes are nearly the same as those of alkyl halides containing the same number of carbon atoms. For the same halogen atom, the melting and boiling points increase as the size of the aryl group increases.

The melting point of para isomer is quite higher than that of ortho or meta isomers. This is due to the fast that is has symmetrical structure and therefore, its molecules can easily pack loosely in the crystal lattice. As a result intermolecular forces of attraction are stronger and therefore, greater energy is required to break its lattice and it melts at higher temperature. Nucleophilic substitution reaction:. Haloalkanes and Haloarenes class 12 Notes Chemistry.

The revision notes covers all important formulas and concepts given in the chapter. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. These notes will certainly save your time during stressful exam days.

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Class 12 Chemistry Revision Notes for Chapter 10 - Haloalkanes and Haloarenes

Haloalkanes are classified as fluoro, chloro, bromo or iodo compounds according to the type of halogen present and as mono-, di- tri-, tetra- haloalkanes, etc. Due to electronegativity difference between the carbon and the halogen, the shared pair of electron lies closer to the halogen atom. As a result, the halogen carries a small negative charge, while the carbon carries a small positive charge. Consequently, C-X bond is a polar covalent bond. Methods of Preparation of Haloalkabes: Haloalkanes can be prepared from displacement of alcoholic group in alkyl alcohol by halogen acid, PCl 5 or PCl 3. Haloalkanes can also be prepared by addition of halogen acids or halogens on alkene and alkyne. Alkyl halides can also be prepared by free radical halogenation of alkane.

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Haloalkanes and Haloarenes

The replacement of hydrogen atom s in a hydrocarbon, aliphatic or aromatic, by halogen atom s , results in the formation of alkyl halide. The topics and sub-topics covered in Haloalkanes and Haloarenes Class 12 Notes are:. Forgot Password? OTP has been sent to you on your mobile number. Please enter below. Didn't receive OTP?

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Haloalkanes and Haloarenes Class 12 Notes - Chapter 10

These notes are based on latest CBSE syllabus and are helpful for quick revision of the chapter. The main topics covered in this part are:. Haloalkane and Haloarene:. In aliphatic or aromatic compounds, the replacement of hydrogen atom s by halogen atom s results in the formation of alkyl halide haloalkane and aryl halide haloarene , respectively. In case of haloalkanes, halogen atom is attached to the sp3 hybridised carbon atom of an alkyl group whereas in haloarenes, halogen atom is attached to sp2 hybridised carbon atom of an aryl group. Classification of Haloalkanes:.

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