Compound X was developed on a TLC plate using a given eluent. The compound had a Rf value of 0.93 and the solvent front is 10.1 cm from the origin. Using this information,calculate the distance in cm that compound X traveled from the origin. Report your answer to one decimal place.cm

The retention factor Rf is the distance travelled by the compound from the origin divided by the…

Answered: Compound X was developed on a TLC plate…

Chemistry

10th Edition

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

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A student spots an unknown sample on a TLC plate. A single spot with an Rf of 0.55 showed up on the plate after developing the sample in hexanes-ethyl acetate 50:50. Does this prove that the unknown is a pure compound?
At the completion of the experiment, a student measures the solvent front to be 55 mm from the baseline. If a component in the sample being analyzed generates a spot whose diameter spans from 34 to 36 mm from the baseline, calculate the Rf value for that component.
A standard sample of compound A was placed on a silica TLC plate. After elution in 30/70 ethyl acetate/hexane, the sample showed a single spot at 3.4 cm (relative to the initial point) after the solvent had risen to 7.1 cm (relative to the initial point). A sample which was thought to contain this compound was analyzed by TLC and showed two spots after elution in the same solvent system. The solvent height for this plate was 6.5 cm (relative to the initial point) and the spots were located at 3.6 cm and 5.2 cm (relative to the initial point). Can either of these spots possibly be compound A? Explain. Include a discussion of the R, for each spot.
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a. Say you are trying to separate two compounds by column chromatography. You run a column and collect the eluent in five fractions. You analyze each fraction by TLC on the same plate (shown below). Based on the TLC plate, how effective was your separation? Consider the purity of each fraction. - - - - - - - - ----| 1 2 3 4 5
What is the result of applying too much sample to the TLC plate? Select one: Some of the sample moves down instead of up Reduced separation between the spots O The sample moves past the solvent front O The spot does not leave the origin O The sample leeches out into the elution solvent
Calculate the Rf value for a spot in a TLC experiment if the solvent moved 13.5 cm and the spot moved 9.1 cm from the origin. Type answer:
After creating her standard curve for absorption versus the concentration (M) of FD&C Red 40, a student found that her best fit linear line for FD&C Red 40 was y = 2,962x + 0.005. Her Kool-Aid sample had an absorbance of 0.685. If 0.543 grams of Kool-Aid powder was used to prepare an 8-fl oz cup of her assigned flavor, what is the percent by mass of FD&C Red 40 in her 8-fl oz cup?
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Consider the TLC plate pictured below. What is the Rf of the compound if the compound distance is 2.77 cm and the solvent front distance is 5.85 cm? Please report your answer to 2 decimal places only!

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Compound X was developed on a TLC plate using a given eluent. The compound had a Rf value of 0.93 and the solvent front is 10.1 cm from the origin. Using this information, calculate the distance in cm that compound X traveled from the origin. Report your answer to one decimal place. cm