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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.
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Which component has Rf value of 1?
Blue.
What are largest and smallest Rf values?
The largest Rf value is 1, which occurs when the compound remains at the origin of the chromatogram and does not move at all. The smallest Rf value is 0, which happens when the compound moves with the solvent front and does not adhere to the stationary phase.
Why are Rf values used?
Rf values are used mainly for simplicity. These values are generally easier to use to obtain percentages between a couple objects instead of using values that are already established.
What kind of coin is a 5 francs with a RF about the amount?
RF - Republique Francaise (= French Republic).
In which of the four numeric system is place value not used?
Place value is not used in the Roman numeral system.
What is rf value of eugenol?
The Rf value depends on the type of plate used and solvents.
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 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.
Will acetaminophen or ibuprofen have a higher Rf if you carry out a TLC separation of on a silica gel using a non-polar developing solvent?
Acetaminophen will have Rf value of about 0.4 and ibuprofen will have Rf value of about 0.6 if the non polar solvent used is ethanol.
How are Rf values used?
Rf value to compare the "unknown" components of colored candy dyes with the "known" components of food coloring dyes.
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 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 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 of anthocyanin?
anthocyanins rf vlaue is o.95
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
