Practice question
Question
Which carbon in CH₃CH₂CH₂C(=O)OCH₃ has the greatest s-character in its hybridization?
Explanation
In CH₃CH₂CH₂C(=O)OCH₃ (methyl butanoate), the carbonyl carbon (C=O) is sp² hybridized (33% s-character), higher than sp³ (25%) of other carbons.