Study the structure of the most common plant pigments in Figure #2 (pg 177 lab t

Question

Study the structure of the most common plant pigments in Figure #2 (pg 177 lab text. Rank the pigments according to their polarity from most polar to least polar. What information are you basing your answer on? In other words, how did you decide which pigments were most polar /less polar? What did you look for? Based on your answer to the previous question, draw a diagram showing the predicted order of the pigments on the chromatography paper after they separate. ? Bata caroten fastest migration pare 2 Molecular structure of major leaf pigments. The molecular suructure of Matophyll a, chlonophyll h, carotene, and xanthophyll. To desermine count the number of polar oxygens present in each molecule slowest migration

Explanation / Answer

polarity will decide on the basis of available polar groups.

Chl A - 5 polar group.

Chl B- 6 polar group (most polar)

Xanthophyll - 2 polar group.

Carotene - No polar group. (least polar)

migration in chromatography order -

carotene will move farthest, second is xanthophyll, third is Chl A and last is Chl B.

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