For the TLCS shown below, both plates have the exact same materials spotted on each lane (that is, lane 1 of Plate A and lane 1 of Plate B are identical). What is the most likely difference between Plate A and B? Plate A Plate B 1 2 3 1 2 3 A less polar mobile phase has been used for Plate B A less polar mobile phase has been used for Plate A The top of the developing chamber was left off for Plate A The spots on Plate B were spotted too close together O 00O

For the TLCS shown below, both plates have the exact same materials spotted on each lane (that is, lane 1 of Plate A and lane 1 of Plate B are identical). What is the most likely difference between Plate A and B? Plate A Plate B 1 2 3 1 2 3 A less polar mobile phase has been used for Plate B A less polar mobile phase has been used for Plate A The top of the developing chamber was left off for Plate A The spots on Plate B were spotted too close together O 00O

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter10: Tlc Analysis Of Analgesic Drugs

Section: Chapter Questions

Problem 2Q

See similar textbooks

Similar questions

in what order (from lowest to highest Rf) would you expect to find compund A, B, and C on a silica gel TLC plate with dichloromethane? Draw flowchart for separation with org solvent: ether, methylene chloride, aq: HCl, NaOH, NaHCO3
True or False: Rf values can be used to identify pure compounds, provided that the analysis of the unknown is run simultaneously with the known compound in the same TLC plate.
In order to achieve the best separation of several components of different polarity in a mixture spotted on a TLC plate, what guideline should one follow regarding the choice of a developing solvent? (i.e. polar, non-polar, etc,)
On the blank TLC provided to the right, please draw where you would expect to see the spots for B-carotene (lane 1), compound A (lane 2) and compound B (lane 3). This is SiO2 plate and the appropriate developing solvent is used.
1. Define sparging. What is the significance of this step in an HPLC analysis? 2. What are the two types of pre-column? What is the purpose of each type? 3. What are the two types of packing used in HPLC column? Describe each type. Please answer numbers 1-3. Need asap
Thin Layer Chromatography why the non-polar compounds move up the plate most rapidly (higher Rf value), whereas polar substances travel up the TLC plate slowly or not at all (lower Rf value)? Please help me explain this question! Thank you so much!
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?
An ideal RF value for a compound on a developed TLC plate is 0.30. How could you adjust the TLC developing conditions to obtain an RF of 0.30 if it's too low or too high (Hint: Think about chromatography phases).
Why are some of the detectors listed unsuitable for HPLC? Which of the GC detectors ) in the table below ) are suitable for HPLC?
Will a HPLC-UV method be more advantageous than a UV/Vis spectroscopic method for cefuroxime? Explain your answer.
As1...If a TLC plate shows only one spot with an Rf value of 0.98, does this mean the sample is pure? Briefly explain why or why not.
I need to get the rf valuse from a made up value and draw a tlc plate of 30% ethyl actate and 70% peterloume ether