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Question
Biology
Posted 10 months ago
Look up the structure for chlorophyll b. Do you expect it to be more or less polar thsn chlorophyll a? Why?
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Answer from Sia
Posted 10 months ago
Answer
Chlorophyll b is expected to be more polar than chlorophyll a.
Solution
a
Structural difference: Chlorophyll b has an aldehyde group (-CHO) in place of the methyl group (-CH₃) found in chlorophyll a at the C7 position
b
Polarity: The aldehyde group is more polar than the methyl group because it contains an oxygen atom that is more electronegative, creating a dipole
Key Concept
Polarity of chlorophyll molecules
Explanation
The presence of an aldehyde group in chlorophyll b makes it more polar than chlorophyll a, which has a methyl group at the same position.
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