Class 12 CBSE Chemistry Handwritten Notes Quiz

Questions and Answers

Haloarenes are derivatives of aromatic hydrocarbons containing halogen atom

Based on the position of halogen atoms in the aromatic ring

The halogen is bonded to a sp² hybridized carbon atom

Mono haloalkanes contain alkyl groups, while mono haloarenes contain aryl groups Signup and view all the answers

Halo alkanes have sp³ hybridized carbon, while halo arenes have sp² hybridized carbon Signup and view all the answers

Williamson synthesis Signup and view all the answers

Acidic nature Signup and view all the answers

Anisole Signup and view all the answers

Study Notes

Haloalkanes are organic compounds containing carbon, hydrogen, and halogen atoms, while haloarenes are derived from aromatic compounds with a halogen substituent.
Classification is based on the number of halogen atoms: monohaloarenes have one halogen atom, while dihaloarenes have two.

Allylic halides possess a halogen atom bonded to a carbon atom adjacent to a carbon-carbon double bond, leading to unique reactivity patterns.

Mono haloalkanes typically exhibit sp³ hybridization at the carbon atom bonded to the halogen, while mono haloarenes display sp² hybridization at that position.

In haloalkanes, the halogen is attached to a tetrahedral carbon (sp³ hybridized), whereas in haloarenes, the halogen is connected to a planar carbon in an aromatic ring (sp² hybridized).

Ethers are commonly prepared by the Williamson ether synthesis, which involves the reaction of an alkoxide ion with a primary alkyl halide.

Phenols exhibit acidic properties due to the resonance stabilization of their conjugate base; they can undergo electrophilic substitution and oxidation reactions.

Resonance can be observed in compounds containing delocalized pi electrons, such as phenols and aromatic systems, providing stability and influencing reactivity.