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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: Calculate the Rf value for a spot in a TLC experiment if the solvent moved 14.9 cm and the spot…
A: Given values, Distance travelled by solvent = 14.9 cm Distance travelled by solute= 9.5 cm
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Q: Which of the following methods cannot be used to visualize spots on a TLC plate? Group of answer…
A: Which of the following methods cannot be used to visualize spots on a TLC plate? Group of answer…
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A: The TLC plate 3 with all the spots is given below :
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Q: analgesic drug sample was analyzed using TLC to determine its probable active ingredient. The…
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Q: Calculate the Rf value for a spot in a TLC experiment if the solvent moved 13.8 cm and the spot…
A: In the given TLC experiment the movent of the solvent is = 13.8 cm The movement of the spot is = 6.5…
Q: A student measures the solvent height on a TLC plate as 11.5 cm. Spot A was measured at a height of…
A: Formula used :- RF = distance traveled by compound/distance traveled by solvent
Q: If a spot travels 2.3 cm while the mobile phase travels 6.6 cm, what is the Rf value of the…
A: Given: Distance travelled by spot = 2.3 cm Distance travelled by mobile phase = 6.6 cm
Q: Before developing a TLC plate you should _______. a. Make sure to mark the origin with a pen b.…
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Q: Why should you not use a ballpoint pen when marking a TLC plate and why does the horizontal line…
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Q: Calculate the Rf value of a spot if it travelled 1.5 cm while the solvent travelled 2.5 cm. Express…
A: Given : 1. Spot distance = 1.5 cm 2. Solvent distance = 2.5 cm
Q: Calculate the RF value for a spot in a TLC experiment if the solvent move 13.5 cm and the spot move…
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Q: How is the retention factor calculated for a specific spot when doing the TLC analysis? O Distance…
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Q: calculate Rfs for each spot on your chromatogram
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Q: At the completion of the experiment, a student measures the solvent front to be 55 mm from the…
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Q: what will produce a smaller Rf value if the solvent and paper are both changed?
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Q: Calculate the Rf value for a spot in a TLC experiment if the solvent moved 13.5 cm and the spot…
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Q: In thin layer chromatography, changing the mobile phase will alter the Rf value of a compound. O…
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Q: What is the Rf of the compound if the compound distance is 2.59 cm and the solvent front distance is…
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Q: Calculate the Rf value of a spot that travels 5.7 cm, with a solvent front that travels 13 cm.
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Q: how does TLC determine if a sample is pure?
A: checking for purity of a sample, the known sample which is pure(having only one spot) and has the…
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- Calculate the RF value for a spot in a TLC experiment if the solvent move 13.5 cm and the spot move 9.1 cm from the originCalculate the Rf value for a spot in a TLC experiment if the solvent moved 14.9 cm and the spot moved 9.5 cm from the origin.Calculate the Rf value of a spot that travels 5.7 cm, with a solvent front that travels 13 cm.
- What would be the effect of a thin alumina on the retention, R,? A.Higher Rf B.Lower Rf C.No effect D. Cannot be determinedIt is acceptable to draw the TLC spotting line with a pen as long as it is marked very lightly. True FalseAt 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.
- If a TLC was run in a solvent system that caused all the spots to show up at the baseline, how could the system be adjusted so that Rf values could be determined?If a spot travels 2.3 cm while the mobile phase travels 6.6 cm, what is the Rf value of the substance in the spot? What is the mobile phase used and stationary phase used in this lab?If the TLC plates had been developed in a more polar solvent, would retention factors on the whole be larger, smaller, or unchanged? Briefly (1 - 2 sentences) explain your reasoning
- Does the amount of radiation (cpm) increase or decrease as the distance between the sorce and the sensor increases? ExplainCalculate the Rf value if the solvent moved 13.3 cm and an ink component moved 8.7 cm.If you run a compound on 4 different TLC plates using the following four different solvent systems which solvent system would give the largest Rf value for the compound?
