Deck 4: Stereochemistry

Question 1

Which of the following statements is true?

A) A molecule that is superimposable on its mirror image is chiral.
B) A chiral molecule usually contains a plane of symmetry.
C) Enantiomers are mirror images that are not superimposable.
D) An achiral molecule does not contain a plane of symmetry.

Answer 1

Enantiomers are mirror images that are not superimposable.

Question 2

Which of the following compounds are meso?

A) Only I
B) I and II
C) Neither
D) Only II

Answer 2

Only II

Question 3

What is the relationship between the following two compounds?

A) Identical
B) Not isomers, different compounds
C) Stereoisomers
D) Constitutional isomers

Answer 3

Constitutional isomers

Question 4

Give the IUPAC name for the following compound:

A) (3S,4S)-4-chloro-3-hexanol
B) (3R,4R)-4-chloro-3-hexanol
C) (3R,4S)-4-chloro-3-hexanol
D) (3S,4R)-4-chloro-3-hexanol

Question 5

Give the IUPAC name for the following compound:

A) (3S,4R)-4-chloro-3-hexanol
B) (3S,4S)-4-chloro-3-hexanol
C) (3R,4S)-4-chloro-3-hexanol
D) (3R,4R)-4-chloro-3-hexanol

Question 6

Which of the following is the definition of chirality?

A) The existence of a molecule that is not superimposable on its mirror image.
B) The existence of a molecule with a mirror image.
C) The existence of a molecule with a carbon atom that has four different substituents.
D) The existence of a molecule that is superimposable on its mirror image.

Question 7

Which of the following would have the same physical properties?

A) A pair of constitutional isomers
B) Two of these choices are correct.
C) A pair of enantiomers
D) A pair of diastereomers

Question 8

Which of the following statements isnot true?

A) A carbon atom bonded to four different groups is a stereogenic center.
B) A molecule that is superimposable on its mirror image is said to achiral.
C) A molecule that is not superimposable on its mirror image is said to be chiral.
D) A molecule that is superimposable on its mirror image is said to be chiral.