Transition Metals

• Contact Process:

  V2O5 +2e ->V2O4

  • V2O5 + SO2 -> V2O4 + SO3
  • V2O4 + 1/2 O2 -> V2O5
• Ethanoyl Chloride is corrosive so isn’t used in industrial synthesis
• Explain the bonding and the shape of a benzene molecule, compare benzene’s stability with that of cyclohexa-1,3,5-triene

  Bonding (3 covalent bonds, free electrons overlap, delocalisation)

  Shape (planar, 120 bond, C-C bond length)

  Stability (hydrogenation of cyclohexane is -360, hyd of benzene is -152 and less exo, more stable)
• Why would different solvents be used?

  more polar solvents have a higher affinity to solvents