A student spots an unknown sample on a TLC plate and develops it in dichloromethane solvent. Only one spot, for which the Rf value is 0.95, is observed. Does this indicate that the unknown material is a pure compound? What can be done to verify the purity of the sample?

Q: If a single spot divides into 3 unique spots during a paper chromatography experiment,  how many Rf…

A: Here we are required to find number of Rf that can be calculated when a single spot divide into 3…

Q: If the TLC plates had been developed in a more polar solvent, would retention factors on the whole…

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Q: Calculate the Re value for a spot in a TLC experiment if the solvent moved 14.5 cm and the spot…

A: Given  Distance moved by solvent =  14.5 cm  Spot of Compound moved  from the origin = 6.1 cm  Rf =…

Q: A student performs this and records the following data from the complted chromatogram. the solvent…

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Q: A line was drawn 1 cm from the bottom of the TLC plate. The distance the dye spot moved on a TLC…

A: Retention factor (Rf) is defined as the ratio of the distance travelled by the compound (dc) to the…

Q: Solvent Front Highest point of the dye Lowest point of the dye Rf Value Baseline Chromatogram A 15.0…

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Q: The solvent level in the development chamber should be above the level of the spotted compounds on…

A: The solvent level in the development chamber should be above the level of the spotted compounds on…

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Q: Based on the following Rf values from TLC, explain the similarities and differences between Crude 1…

A: A question based on analytical process that is to be accomplished.

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Q: Consider the following errors that could be made when running TLC. Indicate what should be done to…

A: TLC is a useful technique for separating and analyzing mixtures, but it requires careful attention…

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Q: If a TLC was run in a solvent system that caused all the spots to show up at the baseline, how could…

A: Rf value Vs polarity of the eluent

Q: A sample that contained two components was separated on a column. The column had a length of 15.0…

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Q: It is acceptable to draw the TLC spotting line with a pen as long as it is marked very lightly.…

A: False

Q: A student performs a TLC experiment and at the end of the experiment, sees no spots other than the…

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Q: During TLC, what is the stationary phase and what is the mobile phase?

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Q: In the diagram of TLC for column chromatography, when does the organic product show up, and when…

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Q: 18000 10000 14000- 12000 10000 8 8000. 6000- 4000- 2000- 0 0 0.5 Component Acetone 0.82 Isoborneol…

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Q: 1.  All chromatography involves a solid phase, and mobile phase.  In thin layer chromatography the…

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Q: How can TLC be used to determine if a sample is pure?

A: Thin Layer Chromatography (TLC) is a separation procedure that requires a very small sample. It is…