Cahn-Ingold-Prelog Convention (Determining R/S)
Interactive Video
•
Physics, Science, Chemistry
•
11th Grade - University
•
Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the Cahn-Ingold-Prelog convention?
To calculate the density of molecules
To determine the boiling point of substances
To identify the molecular weight of compounds
To differentiate between enantiomers
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you identify a chiral center in a molecule?
By finding a carbon atom bonded to four different groups
By locating the heaviest atom in the molecule
By finding a carbon atom bonded to identical groups
By identifying the longest carbon chain
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What determines the priority of groups attached to a chiral center?
The overall molecular weight
The length of the carbon chain
The atomic mass of the atoms directly attached
The number of hydrogen atoms present
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What configuration is assigned if the circle from group 1 to 2 to 3 is clockwise?
S configuration
R configuration
Z configuration
E configuration
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should you do if the lowest priority group is not away from you?
Always assign S configuration
Ignore the configuration
Always assign R configuration
Mentally reposition yourself or swap groups
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the stereochemistry if you swap two groups on a chiral center?
It remains unchanged
It becomes undefined
It doubles
It inverts
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example where the lowest priority group is in the plane of the board, what is a suggested method to assign configuration?
Assign configuration based on intuition
Mentally orient yourself to view the group as away
Swap the lowest priority group with another
Use a molecular model
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