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Multiple Choice
Which of the following statements best describes chirality in organic molecules?
A
Chirality refers to the ability of a molecule to rotate plane-polarized light.
B
Chirality is a characteristic of molecules that contain double bonds.
C
Chirality is the result of convergent evolution in organic chemistry.
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 of a molecule where it cannot be superimposed on its mirror image. This is similar to how left and right hands are mirror images but not identical.
Identify the structural feature responsible for chirality: A chiral molecule typically contains a carbon atom bonded to four different substituents, known as a chiral center or stereocenter.
Evaluate the ability to rotate plane-polarized light: Chiral molecules can rotate plane-polarized light, a property known as optical activity. However, this is a consequence of chirality, not the definition itself.
Consider the role of double bonds: Double bonds do not inherently cause chirality. Chirality is more about the spatial arrangement of atoms around a chiral center.
Clarify the concept of non-superimposable mirror images: The correct description of chirality is that it is a property of a molecule that has a non-superimposable mirror image, meaning the molecule and its mirror image are distinct and cannot be aligned perfectly.