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Why are Rf values used?

Anonymous

∙ 10y ago

Updated: 12/23/2022

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.

Wiki User

∙ 10y ago

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Q: Why are Rf values used?

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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 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.

What kind of coin is a 5 francs with a RF about the amount?

RF - Republique Francaise (= French Republic).

What is the antonym for divisor?

Divisor: One of the two values used in a DIVISIONequation.FACTOR: One of the two values used in a multiplication equation.Factor.

Are absolute values used rarely?

No

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Related Questions

How are Rf values used in real life?

Rf values can be used to identify the type of drugs that had been taken by those who went through drug overdose.

How are Rf values used?

Rf value to compare the "unknown" components of colored candy dyes with the "known" components of food coloring dyes.

What are the Rf values of amino acids?

The Rf (retention factor) values of amino acids can vary based on the specific conditions used in thin layer chromatography. Generally, Rf values for different amino acids will fall within a range of approximately 0.1 to 0.9, with each amino acid having a unique Rf value based on its individual chemical properties. For precise values, it is best to consult specific experimental data or reference sources.

Can 2 substances with different Rf values still be similar?

Yes, two substances with different Rf values can still be similar. Differences in Rf values can be due to various factors, such as the polarity of the compound or the composition of the stationary phase. Therefore, substances with different Rf values can still share similar chemical structures or functional groups.

Why test building materials at different RF values?

Different RF values are used in order to identify components of a mixture. Thin Layer & Column Chromotography is the procedure that is used to prepare and analyze materials, such as those that are used in the chemical manufacturing plants, forensics, and water purification, among other things.

What are the significance of values?

Rf Values determine the solubility of a substance with respect to a certain solvent.

Would RF values of amino acid you use in paper chromatography be the same if you use another solvent system?

No, RF values depend on the specific solvent system used in the chromatography process. Changing the solvent system can alter the interactions between the amino acids and the stationary phase, resulting in different RF values. It is important to optimize the solvent system to achieve accurate and reproducible results.

Arrange the following compounds in order of increasing Rf values in TLC Anthracene benzil tryphenylmethanol?

The order of increasing RF values in TLC is Benzil, methanol anthracene and tryphenyl.

Where you could find the standard Rf values for fatty acids and poly unsaturated fatty acids?

You can typically find standard Rf values for fatty acids and polyunsaturated fatty acids in scientific literature, such as research papers, textbooks on chromatography, or chemical databases like ChemSpider or PubChem. These values may vary depending on the specific method and conditions used for their determination.

How are values used?

Rf value to compare the "unknown" components of colored candy dyes with the "known" components of food coloring dyes.

Why Ni positive 2 and iron positive 3 ions have different Rf values?

Ni2+ and Fe3+ ions have different Rf values because they have different charge-to-size ratios, leading to differences in their interactions with the stationary phase in the chromatography process. The higher charge of Fe3+ compared to Ni2+ results in stronger electrostatic interactions with the stationary phase, causing it to move slower and have a higher Rf value.

How would the RF values be affected if a more polar solvent were used in the chromatography process?

If a more polar solvent is used in chromatography, the RF values would generally decrease. This is because the more polar solvent would interact more strongly with the compounds being separated, causing them to move more slowly up the chromatography paper.

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