In normal phase TLC, the mobile phase is polar than the stationary phase. Consider the TLC plate below, which was developed using a 25% ethyl acetate:hexane solution. If this same mixture of compounds was developed on a TLC using a 50% ethyl acetate:hexane solution, the orange spot would .... A mixture of two compounds was developed on a TLC plate. The result is shown below. What is one thing the chemist can do to get better results?

In normal phase TLC, the mobile phase is polar than the stationary phase. Consider the TLC plate below, which was developed using a 25% ethyl acetate:hexane solution. If this same mixture of compounds was developed on a TLC using a 50% ethyl acetate:hexane solution, the orange spot would .... A mixture of two compounds was developed on a TLC plate. The result is shown below. What is one thing the chemist can do to get better results?

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...

See similar textbooks

Similar questions

What are some ways to visualize a TLC plate? Why may it be necessary to have more than one method to visualize a TLC plate?
In an experiment of Reverse Phase chromatography using C-18 stationary phase and a mixture of methanol/ethyl acetate/acetic acid, a researcher tried to separate the 3 compounds shown below. Which compound would have the lowest Rf and which the highest Rf in this experiment? Explain your answer and show any relevant structures.
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.
options for blank 1: a, b, c, d, e options for blank 2: red, blue
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
Explain how Thin Layer Chromatography allows for the separation of the components of a mixture on a TLC plate? Please include these words: equilibrium, stationary and mobile phase, nonpolar and polar analytes, affinitity...which analytes (polar/nonpolar) have greater affinity for stationary or mobile phase?
There were 2 spots on the TLC that did not match up with any of the standards. What were the Rf values of these spots? Identify what these chemical species might be and draw their structures. Solvent was 3:1:1 n-butanol/acetic acid/water. First plate is TLC plate 1. Second plate is TLC plate 2.