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Multiple Choice
Which of the following molecules is an example of a chiral compound?
A
acetone
B
2-butanol
C
ethanol
D
benzene
Verified step by step guidance
1
Understand the concept of chirality: A chiral molecule is one that cannot be superimposed on its mirror image. This often involves a carbon atom bonded to four different groups.
Examine the structure of acetone: Acetone (CH₃COCH₃) has a central carbon atom bonded to two identical methyl groups and one oxygen atom, making it achiral.
Analyze the structure of 2-butanol: 2-butanol (CH₃CH(OH)CH₂CH₃) has a central carbon atom bonded to four different groups: a hydroxyl group (OH), a methyl group (CH₃), an ethyl group (CH₂CH₃), and a hydrogen atom (H), making it chiral.
Consider the structure of ethanol: Ethanol (CH₃CH₂OH) has a central carbon atom bonded to two identical hydrogen atoms, a hydroxyl group, and a methyl group, making it achiral.
Review the structure of benzene: Benzene (C₆H₆) is a symmetrical ring structure with alternating double bonds, making it achiral.