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6. Shape and bond angle of amines

  • trigonal planar, 120
  • pyramidal, 107.5
  • tetrahedral, 107.5
  • pyramidal, 109.5

7. larger amines (>5 Carbons) are not soluble in water due to

  • increased chain length- vdw forces too weak to separate h20 molecules
  • decreased chain length- more vdw forces present
  • size- too big to be dissolved
  • carbons repel the water molecules

8. amines react with acids to form

  • acid anhydride
  • salts
  • amides
  • carbonyl compound

9. tertiary amines have boiling points similar to those of

  • carbonyls
  • hydrocarbons
  • alkyls

10. why do amines have lower boiling points than alcohols?

  • N-H bond less polar than O-H bond
  • functional group is hydrophobic
  • N-H bond more polar than O-H bond
  • due to their size