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Flashcards for JEE Chemistry - Haloalkanes and Haloarenes Class 12

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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)
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FAQs on Flashcards for JEE Chemistry - Haloalkanes and Haloarenes Class 12

1. What are haloalkanes and haloarenes?
Ans. Haloalkanes and haloarenes are organic compounds that contain halogen atoms (such as fluorine, chlorine, bromine, or iodine) attached to carbon atoms. Haloalkanes have the halogen atom directly attached to an alkyl group, while haloarenes have the halogen atom attached to an aromatic ring.
2. What are the properties of haloalkanes and haloarenes?
Ans. Haloalkanes and haloarenes have several important properties. They are generally insoluble in water but soluble in organic solvents. They have higher boiling points compared to their corresponding alkanes or arenes due to the presence of halogen atoms, which increase the strength of intermolecular forces. Additionally, haloalkanes and haloarenes are often toxic and have a characteristic odor.
3. What are the uses of haloalkanes and haloarenes?
Ans. Haloalkanes and haloarenes have various applications in different fields. Some commonly used haloalkanes, such as chlorofluorocarbons (CFCs), were previously used as refrigerants and propellants but are now phased out due to their environmental impact. Haloarenes, such as chlorobenzene, find use as solvents, intermediates in chemical synthesis, and in the production of pharmaceuticals and dyes.
4. How are haloalkanes and haloarenes named?
Ans. The naming of haloalkanes and haloarenes follows a specific nomenclature system. In their name, the halogen atom is indicated by a prefix (such as chloro-, bromo-, or iodo-), followed by the name of the parent alkane or arene. The position of the halogen atom is indicated by a number, and if there are multiple halogen atoms, their positions are specified with appropriate numbers.
5. What are the environmental concerns associated with haloalkanes and haloarenes?
Ans. Haloalkanes and haloarenes, particularly those containing chlorine or bromine, are known to be persistent organic pollutants (POPs) and can have harmful effects on the environment. They are non-biodegradable and can accumulate in the food chain, posing risks to human health and ecosystems. Substances such as chlorofluorocarbons (CFCs) have been found to contribute to the depletion of the ozone layer, leading to the development of international agreements to limit their use.
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