Optical isomerism

Cards (8)

  • Stereoisomers have the same structural formula and molecular formula but a different arrangement in space
  • Optical isomers are two non superimposable mirror images of each other

    A optical isomer must have a carbon atom with 4 different groups attached known as "Chiral" Carbon or asymmetric carbon
  • Simple substances that show optical isomerism exits as two isomers known as enantiomers
  • A Racemic mixture is formed when a equal concentration of each enantiomer is formed due to equal attack from either side of the planar carbonyl bond, enantiomers rotate light equally in opposite directions therefore no overall rotation
  • Optical isomers show different behaviours in plane polarised light, they rotate light in opposite directions
  • Answer:
    Q1.
    Q2. Use Plane polarised light (1)
    rotates (the plane of) in opposite directions (2)

    Question
  • Answer
    a, 2-hydroxyhexanenitrile
    b, (Plane) polarised light (1)
    Enantiomers would rotate light in opposite directions(2)
    Questions
  • Answer
    Planar (1)
    Attack from either side (2)
    With equal probability OR produces equal amounts (of the two isomers/enantiomers (3)

    Question