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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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.
(81310 - 76200) ÷ 0.00216 With Sig Figs
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.
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?
[1] In paper chromatography, why do some ions move only a short distance from the point of application while others move much more?
You have obtained a gas chromatogram of a two component mixture of compounds A and B. The height of peak A is 3.84 cm. and the width at half height is 1 cm. The height of peak B is 3.49 cm. and the width at half height is 1.36 cm. The percentage of a component in the mixture is proportional to peak area. Estimate peak areas by multiplying height by width at half height. What was the percentage of compound B in the mixture? (Enter your answer as a number without any percent symbol or the word percent.)
Can a gas chromatograph (GC) separate mixtures of sodium ethoxide and sodium benzoate? Explain your answer
Internal standard (As , Cs ), analyte with known concentration (Ax , Cx ) In a chromatographic equipment, a solution containing 0.006727 X and 0.008331 M S give peak area of Ax= 2316 and As= 207. To analyze an unknown sample, 5.0mL of 0.008331M S was added to 5.0mL of X, and the mixture was diluted to 50.0mL. This mixture gave a chromatography spectrum with area Ax= 3206 and As= 200. Find Cx.

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