The orange colored band, made of the pigment called carotenoids. is the most soluble in alcohol, so it traveled the farthest. The yellow xanthophylls are the next most soluble, followed by the blue-green chlorophyll A. The least soluble pigment is the yellow green chlorophyll B.
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Also question is, which is more soluble in chromatography solvent?
Based on the Rf values, xanthophylls are more soluble in the chromatography solvent.
which pigments were soluble in the acetone? The soluble pigment carotene dissolved into the acetone the easiest, and thus moved the furthest from the origin. The less soluble chlorophyll b did not dissolve as easily into the solvent; it instead was absorbed more readily into the fibers of the paper.
Additionally, which pigment was most soluble in the mobile phase?
blue pigment
Which pigment migrated the farthest up the chromatography paper Why?
The most soluble pigment in the ether/acetone solvent traveled the farthest, and that is the carotene. The least soluble pigment traveled the shortest distance, and that was the chlorophyll b.
Related Question AnswersWhich Photopigment is most soluble in the solvent?
The orange colored band, made of the pigment called carotenoids. is the most soluble in alcohol, so it traveled the farthest. The yellow xanthophylls are the next most soluble, followed by the blue-green chlorophyll A. The least soluble pigment is the yellow green chlorophyll B.What is an RF value?
RF value (in chromatography) The distance travelled by a given component divided by the distance travelled by the solvent front. For a given system at a known temperature, it is a characteristic of the component and can be used to identify components.Why is ethanol a good solvent?
Ethanol as a Solvent. Ethanol is a very polar molecule due to its hydroxyl (OH) group, with the high electronegativity of oxygen allowing hydrogen bonding to take place with other molecules. Ethanol therefore attracts non-polar molecules. Thus, ethanol can dissolve both polar and non-polar substances.What is solubility in chromatography?
Solubility - the property of how well a substance in the mixture dissolves into the solvent. The higher the solubility the faster the substance will move along the column.Why are two solvents used in chromatography?
Chromatography is a technique used to separate the components of a mixture. Different solvents will dissolve different substances. A polar solvent (water) will dissolve polar substances (water soluble ink in the video below). A non-polar solvent will dissolve non-polar substances.Is benzene a solute or solvent?
A solvent is a liquid that dissolves a solute. The solvent is the component of a solution that is present in greater amount. Perhaps the most common solvent in everyday life is water. Many other solvents are organic compounds, such as benzene, tetrachloroethylene, or turpentine.Why is Xanthophyll soluble?
The potassium salts of the acid chlorophyllins are insoluble in ether but soluble in water so that by shaking the ethereal solution with water after treatment with alkali, the saponified chlorophylls are separated from the carotene, and xanthophyll remains in solution in the ether.Why is RF less than 1?
By definition, Rf values are always less than 1. An Rf value of 1 or too close to it means that the spot and the solvent front travel close together and is therefore unreliable. This happens when the eluting solvent is too polar for the sample.Which pigment is most nonpolar?
Carotene moves the farthest because it is the most nonpolar of the pigments and it is attracted more strongly to the acetone-ligroin mixture (mobile phase) than to the paper. This stronger, nonbonded interaction with the mobile phase indicates that carotene is the most nonpolar pigment found in spinach chloroplasts.Which pigment has the highest RF value?
| Pigment | Rf value range | Relative position |
|---|---|---|
| Lutein | 0.22-0.28 | Below, or almost at the same level of, the highest green |
| Violaxanthin | 0.13-0.19 | Below, or almost at the same level of, the highest green |
| Neoxanthin | 0.04-0.09 | Below, or almost at the same level of, the highest green |
