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Multiple Choice
Which of the following best explains the chirality observed in certain organic molecules?
A
Chirality arises due to the presence of a chiral center, typically a carbon atom bonded to four different groups.
B
Chirality is due to the presence of double bonds in a molecule.
C
Chirality is a result of molecules having identical groups attached to a central atom.
D
Chirality occurs when molecules have a symmetrical arrangement of atoms.
Verified step by step guidance
1
Understand the concept of chirality: Chirality in organic chemistry refers to a molecule's property of being non-superimposable on its mirror image, much like left and right hands.
Identify the chiral center: A chiral center is typically a carbon atom that is bonded to four different groups or atoms. This unique arrangement leads to two non-superimposable mirror images, known as enantiomers.
Evaluate the options: Consider the explanation that chirality arises due to the presence of a chiral center, which is the most accurate description of why certain organic molecules exhibit chirality.
Analyze the incorrect options: Chirality is not due to double bonds, as these do not create non-superimposable mirror images. Identical groups attached to a central atom do not result in chirality, as they do not create the necessary asymmetry. Symmetrical arrangements of atoms do not lead to chirality, as symmetry implies superimposability.
Conclude with the correct explanation: The presence of a chiral center, typically a carbon atom bonded to four different groups, is the best explanation for the chirality observed in certain organic molecules.