Optical Isomerism - Important Questions & Preparation Tips

Optical isomers were given their name because they were first able to be distinguished by how they rotated plane-polarized light.

This is very important topic for the cbse board examination as well as for the medical entrance examination.

In this video you will get the clue that from where and how the questions are being framed from the topics like optical isomerism, specific rotation, Chiral molecules, Enantiomers, Diastereomers, Racemic mixure, Resolution and Walden inversion

Let us move one by one

Pay attention on the following points / terms/ questions while studying this topic

1. Optical isomerism

• what is optical isomerism
• what is plane polarized light
• what is nickol prism
• nature of the nickole prism
• what is plane of polarization
• name of the some compound which shows optical activity
• What is the difference between d(+), l(-) and D, L
• Formula and concept to calculate the number of optical isomers

2. specific rotation:

•  what is specific rotation
•  formula for the specific rotation
•  units of the parameters used in the formula
•  on what parameter specific rotation depends on

3. Chiral molecules:

    What is chiral carbon OR chirality
    Properties of chiral molecule
    Relation between chiral molecule and optical activity
    What is dissymmetric or a symmetric molecule
    Examples of chiral molecules

4. Enantiomers and Diastereomers:

• Definition in various aspects and parameters
• How plane of polarization is rotated by Enantiomers
• Enantiomers reacts with chiral reagent with same or different speed
• Weather they have same / different (1)chemical properties (2) biological properties (3)physical properties
• Formula and concept to calculate the number of optical Enantiomers
• Weather these compounds are optically active or inactive

5. Racemic mixure:

• Definition in various aspects and parameters
• Difference between Enantiomers and racemic mixture
• What is reason that racemic mixtures are optically inactive
• What is the formula to calculate the number of racemates

6.    Resolution and Walden inversion

• Definition in the form of d and l form

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