Differences Between Haloalkanes and Haloarenes

The key differences between haloalkanes and haloarenes as per the NCERT syllabus are:

• Structure: Haloalkanes contain a halogen atom attached to an aliphatic carbon chain, whereas haloarenes contain a halogen atom attached to an aromatic ring.
• Reactivity: Haloalkanes are generally more reactive than haloarenes due to the resonance stabilization in haloarenes.
• Physical Properties: Haloalkanes are usually colorless liquids or gases, while haloarenes are often colorless solids or liquids.
• Preparation Methods: Haloalkanes can be prepared by free radical halogenation of alkanes, whereas haloarenes are usually prepared by the direct halogenation of aromatic hydrocarbons.
• Uses: Haloalkanes are commonly used as solvents and in the synthesis of other organic compounds, while haloarenes are used in the manufacture of dyes, pesticides, and pharmaceuticals.