Consider a sample that is a mixture composed of biphenyl, benzoic acid, and benzyl alcohol. The sample is spotted on a TLC plate and developed in a dichloromethane– cyclohexane solvent mixture. Predict the relative Rf values for the three components in the sample. Hint: See Table . Table 19.3 Elution sequence for compoundsHydrocarbonsFastest (will elute with nonpolar solvent)OlefinsEthersHalocarbonsAromaticsKetonesOrder of elutionAldehydesEstersAlcoholsAminesAcids, strong basesSlowest (need a polar solvent)

Answered: Table 19.3 Elution sequence for…

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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Consider a sample that is a mixture composed of biphenyl, benzoic acid, and benzyl alcohol. The sample is spotted on a TLC plate and developed in a dichloromethane– cyclohexane solvent mixture. Predict the relative R_f values for the three components in the sample. Hint: See Table .

Table 19.3 Elution sequence for compounds
Hydrocarbons
Fastest (will elute with nonpolar solvent)
Olefins
Ethers
Halocarbons
Aromatics
Ketones
Order of elution
Aldehydes
Esters
Alcohols
Amines
Acids, strong bases
Slowest (need a polar solvent)

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Consider a sample that is a mixture composed of biphenyl, benzoic acid, and benzyl alcohol. The sample is spotted on a TLC plate and developed in a dichloromethane-cyclohexane solvent mixture.

The relative R_f values for the three components in the sample have to be predicted.

The formula for the calculating relative R_f value has to be given below,

$R_{f} = \frac{Distance travelled by the compound}{Distance travelled by the solvent}$

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