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प्रश्न
Haloalkanes contain halogen atom (s) attached to the sp3 hybridised carbon atom of an alkyl group. Identify haloalkane from the following compounds.
(i) 2-Bromopentane
(ii) Vinyl chloride (chloroethene)
(iii) 2-chloroacetophenone
(iv) Trichloromethane
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उत्तर
(i) 2-Bromopentane
(iv) Trichloromethane
Explanation:
\[\begin{array}{cc}
\ce{CH3CHCH2CH2CH3}\\
\phantom{}|\phantom{..........}\\
\phantom{}\ce{\underset{2-Bromopentane}{Br}}\phantom{.........}
\end{array}\]
\[\begin{array}{cc}
\ce{Cl - CH - Cl}\\
\phantom{}|\phantom{..}\\
\phantom{}\ce{\underset{Trichloromethane}{Cl}}\phantom{.}
\end{array}\]
In both of these compounds halogen atoms are attached to sp3 hybridised carbon atom of alkyl group.
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संबंधित प्रश्न
Name the following halide according to the IUPAC system and classify it as an alkyl, allyl, benzoyl (primary, secondary, tertiary), vinyl or aryl halide:
CH3CH2C(CH3)2CH2I
Name the following halide according to the IUPAC system and classify it as an alkyl, allyl, benzoyl (primary, secondary, tertiary), vinyl or aryl halide:
p-ClC6H4CH2CH(CH3)2
Name the following halide according to the IUPAC system and classify it as an alkyl, allyl, benzoyl (primary, secondary, tertiary), vinyl or aryl halide:
m-ClCH2C6H4CH2C(CH3)3
Identify the compound Y in the following reaction.
Classify the following compound as a primary, secondary and tertiary halide.
2-Bromo-2-methylpropane
Why can aryl halides not be prepared by reaction of phenol with \[\ce{HCl}\] in the presence of \[\ce{ZnCl2}\]?
Match the structures of compounds given in Column I with the classes of compounds given in Column II.
| Column I | Column II | |
| (i) | \[\begin{array}{cc} \ce{CH3 - CH - CH3}\\ |\phantom{..}\\ \ce{X}\phantom{..} \end{array}\] |
(a) Aryl halide |
| (ii) | \[\ce{CH2 = CH - CH2 - X}\] | (b) Alkyl halide |
| (iii) |  |
(c) Vinyl halide |
| (iv) | \[\ce{CH2 = CH - X}\] | (d) Allyl halide |
Classify the following compound as a primary, secondary and tertiary halide.
1-Bromobut-2-ene
Why are haloalkanes more reactive towards nucleophilic substitution reactions than haloarenes and vinylic halides?
Two isomers (A) and (B) with molar mass 184 g/mol and elemental composition C 52.2%; H 4.9% and Br 42.9% gave benzoic acid and p-bromobenzoic acid, respectively on oxidation with KMnO4. Isomer ‘A’ is optically active and gives a pale yellow precipitate when warmed with alcoholic AgNO3. Isomer ‘A’ and ‘B’ are, respectively:
Which of the following belongs to the class of vinyl halides?
Name the following halide according to IUPAC system and classify it as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
\[\ce{CH3C(C2H5)2CH2Br}\]
Name the following halides according to the IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
\[\ce{CH3C(C2H5)2CH2Br}\]
Name the following halide according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
\[\ce{CH3C(C2H5)2CH2Br}\]
Name the following halide according to the IUPAC system and classify it as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
\[\ce{CH_3CH_2C(CH_3)_2CH_2I}\]
Name the following halide according to IUPAC system and classify as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
\[\ce{CH3C(C2H5)2CH2Br}\]
Name the following halide according to IUPAC system and classify as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
\[\ce{CH3CH2C(CH3)2CH2I}\]
