Final answer:
The hypothesis for chromatography solubility is based on polarity, with the expected order of precipitation from the origin being Chlorophyll B, Chlorophyll A, Xanthophyll, and Beta-carotene due to their respective polarities.
Step-by-step explanation:
A hypothesis predicting the relative solubilities of the pigments in chromatography solvent could be: 'The pigments will differ in their solubility based on their polarity, with non-polar pigments traveling further than polar pigments.' Considering their chemical structures and affinities, the expected order of precipitation from closest to the origin to the last would be: Chlorophyll B, Chlorophyll A, Xanthophyll, and Beta-carotene.
Chlorophyll A and B are similar in structure but Chlorophyll A is slightly less polar than B, allowing it to travel further from the origin. Xanthophyll has oxygen-containing groups making it more polar than Carotenoids, and Beta-carotene is the most non-polar, due to its long hydrocarbon chain, allowing it to travel the furthest from the origin in a non-polar solvent.