Chem/Physics

Question 1

Chiral

Answer 1

Any molecule that cannot he superimposed on its mirror image, contains a chiral centre

Question 2

Achiral

Answer 2

Any molecule that can be superimposed on its mirror image and has a plane of symmetry

Question 3

Chiral centres/stereocentre/stereogenic centre/asymmetric centre

Answer 3

Has four different groups bonded to it, usually carbon

Question 4

Absolute configuration

Answer 4

R- clockwise, S-counterclockwise

Question 5

Enantiomer

Answer 5

Non-superimposable mirror images, chiral centers with opposite absolute configurations and optical activity

Question 6

Optical activity

Answer 6

If a compound rotates the plane of polarized light: d- clockwise, l-counterclockwise

Question 7

Specific rotation

Answer 7

The magnitude of rotation of plane polarized light for any compound

Question 8

What is optical activity (specific rotation) dependent on?

Answer 8

Structure of the molecule, concentration of the sample, path length through which the light must travel

Question 9

Resolution

Answer 9

The process of separating a racemic mixture

Question 10

Meso compound

Answer 10

Compounds that contain chiral centers but also an internal plane of symmetry, optically inactive

Question 11

Geometric isomers

Answer 11

Diastereomers that differ in orientation around a ring or double bond