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What would happen to the Rf value if a chromatography strip was twice as long and half as long?
Wiki User
∙ 11y ago
No, because the distance a compound moved in relation to the solvent front is relative. The higher up the solvent front the greater the distance travelled by the compound. Remembering that Rf is always <1.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agono because the solvent might travel further up
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What will happen if there is an overrun of solvent in paper chromatography?
The Rf value cannot be determined since the distance of the solvent may overlay in the paper.
What is Rf value?
It is the distance travelled by the sample or analyte divided by distance travelled by the solvent front in chromatography.
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 Rx value in chromatography?
Rx = Distance travelled by solute from original line / Distance travelled by standard substance x from original line
An experiment was performed in lab that was supposed to produce aspirin. How could chromatography be used to tell if aspirin was actually the product of the reaction?
i would recommend using high performance liquid chromatography or the common thin layer chromatography using a spot of the sample and a spot of dissolved aspirin to compare the Rf-value or relative retention times of the 2 spots to determine if you have aspirin
What will happen if there is an overrun of solvent in paper chromatography?
The Rf value cannot be determined since the distance of the solvent may overlay in the paper.
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 twice the value of 5 in 2851?
twice the value of 5 in 2851 = 100
What is Rf value?
It is the distance travelled by the sample or analyte divided by distance travelled by the solvent front in chromatography.
How much is a metal drag strip lunch box worth?
what's the value of my drag strip lunch box
What two factors determine the rate at which the pigments travel up the chromatography paper?
Rf value. polarity of 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.
How do you measure Rf?
Rf value = distance traveled by a compound/distance traveled by a constant.Source: http://www.chemguide.co.uk/analysis/chromatography/paper.html
How do you calculate Rf in chromatography?
In chromatography, Rf is the distance the solute travels divided by the distance the mobile phase travels. For example, in thin layer chromatography, if the spot travels 7 cm, and the mobile phase travels 15 cm, the Rf value for that spot will be 7/15 = 0.47
How do you determine which color moved the fasted due to Rf value?
The Rf value is calculated on the chromatography strip (usually TLC). It is an arbitrary value so its number doesn't really mean much outside of your experiment... The results will only tell you what color moved the furthest... So the greatest the Rf value, the further the color went and visa versa. The fastest moving color would have to be observed during the experiment, but you can assume that the lightest dye would move the fastest/furthest when you disregard polarity of the molecules.
What is the value of a Wisconsin quarter with leaf pointing downward?
Twice its original value
What is Rx value in chromatography?
Rx = Distance travelled by solute from original line / Distance travelled by standard substance x from original line
