BMSC 200 Chapter 1 Exam Questions
and Answers
What grants a configuration - ANSWER-Double Bonds(No freedom of rotation)
Chiral Centre (Substitutent groups are arranged in a specific positioning)
Geometric Isomer - ANSWER-Cis and Trans
Same chemical formula, different arrangement of groups (double bond doesnt move)
Cis?
Trans? - ANSWER-Cis: Groups are on same side of double bond
Trans: Groups are on opposite sides of double bond
Chirality - ANSWER-Four different substituents are attached
Molecule with n chiral carbons will have 2^n stereoisomers
Cannot be superimposed
Achiral - ANSWER-Three or less stereocentres are attached
Can superimpose
Stereoisomer - ANSWER-Cannot superimpose
Differ in configuration at chiral centre
Can be enantiomer or diastereomer
Enantiomer vs Diastereomer? - ANSWER-Enantiomers are two molecules that are
mirror images of each other.
Diastereomers are two molecules that are not mirror images of each other
Racemic mixture - ANSWER-Equal amounts of left and righthanded enantiomers
No optical rotation
What are thr advantages of having polymers? - ANSWER-Simplicity; one type of
reaction for polymetization, a second type of reaction for degradation
and Answers
What grants a configuration - ANSWER-Double Bonds(No freedom of rotation)
Chiral Centre (Substitutent groups are arranged in a specific positioning)
Geometric Isomer - ANSWER-Cis and Trans
Same chemical formula, different arrangement of groups (double bond doesnt move)
Cis?
Trans? - ANSWER-Cis: Groups are on same side of double bond
Trans: Groups are on opposite sides of double bond
Chirality - ANSWER-Four different substituents are attached
Molecule with n chiral carbons will have 2^n stereoisomers
Cannot be superimposed
Achiral - ANSWER-Three or less stereocentres are attached
Can superimpose
Stereoisomer - ANSWER-Cannot superimpose
Differ in configuration at chiral centre
Can be enantiomer or diastereomer
Enantiomer vs Diastereomer? - ANSWER-Enantiomers are two molecules that are
mirror images of each other.
Diastereomers are two molecules that are not mirror images of each other
Racemic mixture - ANSWER-Equal amounts of left and righthanded enantiomers
No optical rotation
What are thr advantages of having polymers? - ANSWER-Simplicity; one type of
reaction for polymetization, a second type of reaction for degradation