Alcohol phenol and ether — 7-topic bundle

• Reaction with Active Metals: Alcohols react with active metals like sodium (Na) or potassium (K) to form alkoxides and hydrogen gas. This demonstrates their weakly acidic nature.
  2R-O-H + 2Na → 2R-O⁻Na⁺ + H₂
  (Alcohol) + (Sodium) → (Sodium Alkoxide) + (Hydrogen Gas)

• Acidity Order:
  Primary alcohol > Secondary alcohol > Tertiary alcohol
  This order is due to the electron-donating inductive effect of alkyl groups, which destabilizes the alkoxide ion, making it harder for the alcohol to release a proton. Water is generally more acidic than alcohols.

Phenols are organic compounds where a hydroxyl (-OH) group is directly attached to an aromatic ring. This direct attachment significantly influences their chemical behavior compared to simple alcohols.

Phenols are more acidic than alcohols but less acidic than carboxylic acids. This acidity stems from the ability of the phenol to lose a proton (H+) to form a phenoxide ion.

Why is the phenoxide ion stable?
1. Resonance Stabilization: The negative charge on the oxygen atom in the phenoxide ion can delocalize into the aromatic ring through resonance. This spreading out of the charge stabilizes the ion.

Photo by Stephen Andrews on Pexels

Preparing alcohols and phenols involves several distinct methods, depending on what starting material you have.

Photo by Rick Leal de Sousa on Pexels