Don't use AI. 4) The image below shows the complete chromatographyseparation of a mixture on the left, and an incomplete image ofthe same mixture's separation on the right. The data on the lefthas a leading edge of solvent of 10.0 cm and the distance travelledby the dye was 8.0 cm. The data on the right shows the leadingedge of solvent as 6.0 cm. What distance would you predict thesame dye to travel on the chromatography paper on the right?a) 4.8 cmb) 6.0 cmc) 8.0 cmd) Cannot be determinedFinal Position of DyeSolventOriginal Position of DyeChromatography paper

Retention factor Rf is described as,Rf = distance the component moves/distance the solvent moves In…

Answered: 4) The image below shows the complete…

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter9: Column Chromatography: Fluorenone, Cholesteryl Acetate, Acetylferrocene, And Plant Pigments

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Problem 5Q

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Chromatography involves the separation of two or more compounds/ions caused by their molecular interactions with two phases. True False
A quality-control laboratory analyzes a product mixture us-ing gas-liquid chromatography. The separation of components ismore than adequate, but the process takes too long. Suggest twoways, other than changing the stationary phase, to shorten theanalysis time
A student performed chromatography on a mixture of benzoic acid (C6H5CO₂H), acetophenone (C6H5C(O)CH3) and styrene (C6H5CHCH₂). She used alumina (Al₂O3) as the stationary phase and a 9 : 1 mixture of hexane : ethyl ethanoate as the mobile phase. Rank the order in which the compounds moved, from fastest to slowest. benzoic acid acetophenone styrene
A student was performing paper chromatography and let the separation continue overnight. Thestudent wished to determine if the mixture contained a substance with an Rf factor of 0.343 where:Rf = (distance travelled by the component)/(distance travelled by the solvent)a) What data would be affected by this error?b) Explain the effect on the calculated Rf.
Gas chromatography cannot analyze mixtures due to the sensitivity of the instrument. True False
Given below is a diagram of separation of two components of a mixture in a chromatographic column. From the diagram, which component has lesser affinity to the stationary phase? a X b Z c F d D
(81310 - 76200) ÷ 0.00216 With Sig Figs
Gas Chromatography can have which of the following stationery phases and/or mobile phases: A mixture hydrogen and oxygen as a mobile phase O a thin film on a solid support within the column as the stationery phase O a carrier gas as a stationery phase O a mixture of hexane and acetone as the mobile phase
Chromatography is based on molecules differing physical properties as a means of separating compound mixtures. Group of answer choices True False
One method for the quantitative determination of the concentration of constituents in a sample analyzed by gas chromatography is area normalization. Here, complete elution of all the sample constituents is necessary. The area of each peak is then measured and corrected for differences in detector response to the different eluates. This correction involves dividing the area by an empirically determined correction factor. The concentration of the analyte is found from the ratio of its corrected area to the total corrected area of all peaks. For a chromatogram containing three peaks, the relative areas were found to be 16.4, 45.2 and 30.2, in order of increasing retention time. Calculate the percentage of each compound if the relative detector responses were 0.60, 0.78 and 0.88, respectively.
2. What is the basis for the separation of components of mixtures by paperchromatography?
1a) Hexane, CH3(CH2)4CH3, is found to have a long retention time when separated from a mixture. A column with a C18 (18-carbon chain) stationary phase and a methanol-water modal phase is used for the separation. Explain why hexane has a long retention time. 1b)You wish to chromatographically seperate a mixtureof the follwing compunds. Which of the two compounds will be most difficult to seperatate from one another? Why?

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