If you saw a spot on one TLC plate which had an Rf value of 0.43 and a spot on a different TLC plate that also had an Rf value of 0.43, could you say for sure that these two spots came from the same compound? Why or Why not?
Added by Matthew G.
Step 1
No, these two spots likely came from different compounds. Show more…
Show all steps
Your feedback will help us improve your experience
David Collins and 51 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
While doing TLC, you noticed that the appearance of separated spots from the TLC plate after viewing in the UV light swelled like blobs or very large circles, rather than small spots. Which of the following is most likely the reason why such "big" spots occurred? The TLC plate was dropped quickly in the chamber. Too much developing solvent was added inside the chamber prior to placing the TLC plate. The TLC plate was not taken out from the chamber after the developing solvent reached the solvent front. Too much sample was used to spot in the TLC plate.
Nicole K.
How one can identify a pure compound on a TLC plate? How one can be sure that two compounds on a TLC plate have the same polarity?
Adi S.
How do you calculate the Rf value for a compound in TLC or paper chromatography experiments? If you did the experiment again and the solvent front was higher, how would the Rf value change? If you change the solvent used to develop the plate, will the Rf values be expected to stay the same? Explain your answers.
David C.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD