Optical Isomerism - Enantiomers & Polarimetry Flashcards
1
Q
Molecules that show optical isomerism can do what?
A
Have the ability to rotate plane polarised light
2
Q
In what direction what a D-isomer (+) move?
A
Rotated clockwise
3
Q
In what direction what an L-isomer (-) move?
A
Rotates anti-clockwise
4
Q
What happens if a solution of L- and D- isomers have the same concentration?
A
Rotate light by equal and opposite amounts
5
Q
What is a racemic mixture?
A
An equimolar mixture of enantiomers
6
Q
What effect will a racemic mixture have on plane polarised light?
A
No overall effect on rotation
7
Q
Why will a racemic mixture have no overall effect on rotation?
A
No overall effect on rotation as the charges cancel each other out.
