Benzene & Phenol

  • Created by: mlgjules
  • Created on: 05-12-18 10:20

Structure

  • Formula- C6H6.
  • Planar shape with 6 C-C bonds of equal length.
  • Overlap of p-orbitals- π bonds.
  • Delocalised π system.
1 of 4

Evidence against the Kekule structure

  • All the C-C bonds are the same length.
  • Benzene doesnt readily undergo addition reactions (e.g. it doesn't decolourise bromine water).
  • The enthalpy of hydrogenation of benzene is lower than would be expected from the Kekule structure. This is because it is thermodynamically more stable due to the delocalised electrons.
2 of 4

Phenol

  • Aromatic alcohol.
  • An OH group is attached directly to a benzene ring.
  • Almost colourless crystalline solid.
  • It is synthesised via a multi-stage process.
3 of 4

Reactions of phenol

  • It is a weak acid so it partially dissociates in water.
  • It can react with sodium hydroxide to form a salt.
  • It doesn't react with carbonates as it is not a strong enough acid.
4 of 4

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Aromatic Chemistry resources »