Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which of the following statements best describes chirality in organic molecules?
A
Chirality occurs when a molecule has a plane of symmetry, making it superimposable on its mirror image.
B
Chirality is the phenomenon where molecules have the same molecular formula but different connectivity of atoms.
C
Chirality refers to the presence of a carbon atom bonded to four different groups, resulting in non-superimposable mirror images.
D
Chirality is the ability of a molecule to rotate plane-polarized light to the left or right.
Verified step by step guidance
1
Understand the concept of chirality: Chirality in organic chemistry refers to a property of a molecule that makes it non-superimposable on its mirror image. This is often due to the presence of a chiral center, typically a carbon atom bonded to four different groups.
Identify the chiral center: A chiral center is usually a carbon atom that is bonded to four distinct substituents. This unique arrangement leads to two non-superimposable mirror images, known as enantiomers.
Evaluate the statements: Analyze each statement provided in the problem to determine which one accurately describes chirality. Consider the definition and characteristics of chiral molecules.
Statement analysis: The first statement mentions a plane of symmetry, which is incorrect for chirality as chiral molecules lack a plane of symmetry. The second statement describes isomerism, not chirality. The third statement correctly identifies the presence of a carbon atom bonded to four different groups, leading to non-superimposable mirror images. The fourth statement refers to optical activity, which is a property of chiral molecules but not the definition of chirality itself.
Select the correct statement: Based on the analysis, the third statement is the most accurate description of chirality in organic molecules, as it highlights the presence of a chiral center leading to non-superimposable mirror images.