0
No, it's not possible to have an RF value greater than one. Rf values are a ratio of the distance a spot has traveled to the total distance of the solvent front. Since the distance of the front is always greater than the distance of a spot, the Rf value is always less than 1.
Wiki User
∙ 8y ago
Wiki User
∙ 15y agoBecause it is the distance traveled by the sample divided by distance traveled by the solvent front in chromatography, and as the sample is moving IN the solvent, it can never go past it, therefore the value will always be equal to or less than 1.00.
Wiki User
∙ 15y ago1 +/- 1
Add your answer:
Earn +20 pts
Why are Rf values always less than 1?
Rf values are distance of substance from origin divided by distance of solvent front from origin. As the substance travels with the solvent, the solvent will always have a greater or equal value to the distance travelled by substance. This means the highest value of Rf is 1.
What does a frequency of recombination of 50 percent indicate?
A recombination frequency is a measure of how likely it is that two genes are linked. It will also tell how likely it is that a crossing over event will occur between those two genes. Thus, for an RF=50% it is random as to whether or not the genes will be inherited together or whether crossing over will separate them (i.e. they independently assort). Traditionally, following Mendel's Second Law (that alleles of genes independently assort), an RF=50% means that the two genes are on different chromosomes; a slightly more complicated corollary is that the two genes need not be on different chromosomes but may be on the same chromosome just very far apart from each other. Thus, the smaller the RF (maximum RF is 50%), the more likely it is that two genes are linked.
what are the following processes releases energy to be used by a cell?
Chemical reactions that release energy are called exergonic. Cellular processes that release energy are called catabolic, or catabolism. {I remember this by thinking 'What does a cat do with its claws to your furniture - it breaks things down.' Also, anabolic steroids are for 'building up'.} The main energy producing catabolic reactions occur using Respiration that releases usable biochemical energy in the form of Atp.
Do all leaves extracts contain the same pigments?
Yes, all leaves contain the same pigments but they contain it at different concentrations. Like in the summer all leaves are green (they all contain chlorophyll) and in the autumn, almost all leaves turn brown, orange, or yellow (contain carotenes, lutein, or xanthophylls). These are only seen when the chlorophyll breaks down like in the autumn, but they are not seen when the chlorophyll comes back like in the spring and summer.
Can you touch fire?
Yes, but it would hurt very badly. Fire, like all things, is composed of matter. In fire's case, that matter is called plasma (as opposed to solid, liquid or gas). All matter takes up space and therefore can be touched.
What is the relationship between chain length and Rf value?
As a general rule the longer the carbon chain the greater the Rf value.
Why are Rf values always less than 1?
Rf values are distance of substance from origin divided by distance of solvent front from origin. As the substance travels with the solvent, the solvent will always have a greater or equal value to the distance travelled by substance. This means the highest value of Rf is 1.
What is the Significance of Rf value?
· Used in identification pusposes · Use to determine the affinity of the solute to the solvent - Greater Rf , greater affinity of solute to the solvent
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 significance of Rf value in chromatography?
See related link below for a better explanation than mine.. I am not to familiar with Rf values, but I have an idea. Rf values are the ratio between the distance traveled by the spot of the analyte to the distance traveled by the solvent used. This is used in paper chromatography and thin layer chromatography. Rf value will allow you to compare to your unknown substance that you are trying to analyze. I will put a link the both paper and TL chromatography.
What is the rf value of cocaine?
Rf is about .45
Why polar compounds have less Rf value?
they interact more with the silica gel, thus travel less than non-polar compounds. Resulting in a lower Rf value.
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
Is a Rf value of 0.95 strongly held on the paper or in the solution?
The retention factor, or Rf, refers to the ratio of time an analyte is retained in the stationary phase to the time it is retained in the mobile phase. An Rf value of 0.95 is strongly held on paper than in the solution.
