Module 7.2: Stereochemistry of Organic Compounds

What is the fundamental question when determining if a molecule and its mirror image are chiral?

• Whether the molecule and its mirror image have the same IUPAC name

• Whether the molecule and its mirror image are superimposable

• Whether the molecule and its mirror image have different physical properties

• Whether the molecule and its mirror image have a plane of symmetry

What is the term used to describe molecules that differ in the way the atoms are oriented in space, but not in which atoms are bonded to which atoms?

• Structural isomers

• Constitutional isomers

• Stereoisomers

• Diastereomers

What is the term for a molecule or object that is not superimposable on its mirror image?

• Chiral

• Achiral

• Diastereomer

• Constitutional isomer

How many stereoisomers can a molecule with three stereogenic centers have?

• 4

• 2

• 6

• 8

What is the maximum number of stereoisomers for a molecule with two stereogenic centers?

• 2

• 8

• 6

• 4

What is the physical property that differs between two enantiomers?

• Melting point

• Optical activity

• Density

• Boiling point

What is the term for stereoisomers that are not mirror images of one another?

• Enantiomers

• Structural isomers

• Constitutional isomers

• Diastereomers

What is the system used to designate enantiomers as R or S?

• Fischer projection

• Optical activity system

• Cahn-Ingold-Prelog system

• Stereoisomerism system

What is the term for a molecule that does not change the plane of polarized light?

• Optically active

• Levorotatory

• Dextrorotatory

• Optically inactive

What is the term for the rotation of polarized light to the right of the noon position?

• Dextrorotatory

• Levorotatory

• Optically inactive

• Optically active