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Multiple Choice
Which of the following statements best describes chirality in organic molecules?
A
Chirality occurs when a molecule has a symmetrical structure.
B
Chirality is the result of a molecule having an equal number of stereocenters.
C
Chirality refers to the ability of a molecule to rotate plane-polarized light.
D
Chirality is a property of a molecule that has a non-superimposable mirror image.
Verified step by step guidance
1
Understand the concept of chirality: Chirality in organic chemistry refers to a property where a molecule cannot be superimposed on its mirror image. This is similar to how your left and right hands are mirror images but cannot be perfectly aligned on top of each other.
Identify the key feature of chiral molecules: Chiral molecules typically have a carbon atom bonded to four different groups, known as a chiral center or stereocenter. This arrangement leads to two non-superimposable mirror images, called enantiomers.
Explore the implications of chirality: Chiral molecules can rotate plane-polarized light, a property known as optical activity. This is a practical way to identify chirality in a laboratory setting.
Clarify common misconceptions: Chirality does not depend on symmetry. In fact, chiral molecules are asymmetrical due to their unique arrangement of atoms around the chiral center.
Review the correct statement: The correct description of chirality is that it is a property of a molecule that has a non-superimposable mirror image, distinguishing it from symmetrical or achiral molecules.