Page 1: Chemical Properties and Reactions of Alcohols and Phenols
This comprehensive page details the fundamental aspects of alcohols and phenols, including their general formulas, properties, and chemical reactions. The content is organized into two main sections covering monohydroxy and polyhydroxy compounds.
Definition: Alcohols are organic compounds containing the hydroxyl −OH group attached to a saturated carbon atom, while phenols have the -OH group directly attached to an aromatic ring.
Example: Methanol CH3OH is a primary alcohol used in motor fuel and oral hygiene products, while ethanol CH2CH2OH serves as a disinfectant.
Highlight: The reaction with CuOH2 serves as a key distinguishing test between monohydric and polyhydric alcohols - polyhydric alcohols form a characteristic blue solution.
Vocabulary:
- Primary alcohol: Contains the -OH group on a carbon atom bonded to one other carbon
- Secondary alcohol: Contains the -OH group on a carbon atom bonded to two other carbons
- Tertiary alcohol: Contains the -OH group on a carbon atom bonded to three other carbons
Quote: "Phenols exhibit acidic properties weakacidsbutstrongerthanalcohols and the -OH group must be directly connected to the aromatic ring."
The page includes detailed reaction mechanisms, including:
- Sodium metal reactions with alcohols
- Dehydration reactions
- Oxidation reactions with potassium dichromate
- Characteristic tests for different types of alcohols and phenols
- Fenol + FeCl3 producing a distinctive violet solution
- Fenol + NaOH forming phenoxide salts
