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Rf value indicates the relationship of the distance moved by a pigment to the distance moved by a solvent.The Rf can be calculated by the following equation. Rf=distance pigment migrated/distance solvent front migrated.
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∙ 15y ago
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∙ 12y agoRf = Distance Substances Traeled/ Distance solvent traeled
Wiki User
∙ 16y agoOkay an Rf Value shows how soluble the componants (in the ink drop) are in the solution being used. It is distance moved by solute/ distance moved by solvent front. Hope that helps.
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∙ 15y agoRf Values determine the solubility of a substance with respect to a certain solvent.
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∙ 12y agoEvery compound has a specific Rf value for every specific solvent and solvent concentration and can be helpful in identifying unknown samples with Rf values of known compounds.
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∙ 14y agothe identity of the compound
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∙ 13y agoratio of a distance.
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What is the minimum value of Rf?
Zero
How do you work out RF value?
Rf = distance to color/distance to front line
Why does carotene have the highest Rf value?
The Rf value of the xanthophyll is two thirds that of carotene because xanthophyll has an H bond with cellulose, which slows it down, and makes it less soluble in the solvent. Carotene is more soluble in 9:1 petroleum-ether acetone solution, which caused it to be carried higher and have a larger Rf value.
What does it mean when the Rf value is less then 0?
When the Rf value is zero, it generally refers to the position of the substance in the chromatogram. This means it did not move of that origin point.
Rf value of beta-carotene?
college bio lab. we got 1, using beta carotene as the front. its traveled 10.8cm
What do the Rf values indicate about the relative solubility of the pigment in the the solvent?
The Rf values do not indicate the solubility of a substance. The Rf value or retardation factor is the ratio of the distance traveled by the center of a pot to the distance traveled by the solvent front in chromatography.
What is the rf value of cocaine?
Rf is about .45
What is the Rf value of salicylamide?
It will depend on the solvent system you are using.
What is rf value of eugenol?
The Rf value depends on the type of plate used and solvents.
How does saturation effect RF value?
Saturation affects the RF value in a significant manner. With saturation of the air, this will result into high RF value which cause poor resolution.Ê
What is the RF value for aspirin using TLC?
Rf value changes with every experiences..... it depends on what was your solvant, the room température, the chromatograph you used..... that's why you wont find Rf tables in organic chemistry books
What is the maximum and RF value can be?
1, if it completely solube in the solvent, it will travel with it, right to the solvent front.
What is rf value and how is determine?
the mobility of any component in a particular solvent is referred to as its RF value. Mathematically, RF value = distance travelled by solute/ distance travelled by the solvent
What is the Rf value of anthocyanin?
anthocyanins rf vlaue is o.95
What is an rf value used for?
The rf value is shorthand for the retention value of a substance. It is used in chromatography to determine the components of an unknown sample.
What is the RF value for red ink blue ink and green ink?
the Rf value value is 8.44 as the particles are lighter than the solvent
What is the relationship between chain length and Rf value?
As a general rule the longer the carbon chain the greater the Rf value.
