In lon Chromatography retention times and the resolution between adjacent peaks can be affected by changing the concentration of the mobile phase. In the ICS2000 instrument used here, the mobile phase is potassium hydroxide. Which ONE of the following responses best explains the effect of increasing the mobile phase concentration on the peak retention times and the resolution between adjacent peaks? As the mobile phase hydroxide concentration is increased the peak retention times decrease and the resolution between adjacent peaks decreases O As the mobile phase hydroxide concentration is increased the peak retention times increase and the resolution between adjacent peaks decreases As the mobile phase hydroxide concentration is increased the peak retention times increase and the resolution between adjacent peaks decreases O As the mobile phase hydroxide concentration is increased the peak retention times increase and the resolution between adjacent peaks increases

In lon Chromatography retention times and the resolution between adjacent peaks can be affected by changing the concentration of the mobile phase. In the ICS2000 instrument used here, the mobile phase is potassium hydroxide. Which ONE of the following responses best explains the effect of increasing the mobile phase concentration on the peak retention times and the resolution between adjacent peaks? As the mobile phase hydroxide concentration is increased the peak retention times decrease and the resolution between adjacent peaks decreases O As the mobile phase hydroxide concentration is increased the peak retention times increase and the resolution between adjacent peaks decreases As the mobile phase hydroxide concentration is increased the peak retention times increase and the resolution between adjacent peaks decreases O As the mobile phase hydroxide concentration is increased the peak retention times increase and the resolution between adjacent peaks increases

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

Peak area is used for quantitative analysis in gas-liquid chromatography. True False
Select wether the following statements are True or False: Two compounds that are separated on a 10 cm column have a resolution equal to 1.5. If all conditions remain identical, if the length of the column is doubled, the resolution will increase. An example of a stationary phase support used in strong anion exchange would be a quarternary ammonium-functionalized polymer. In normal phase chromatography, a more polar compound will have a higher partition coefficient than a compound that is less polar. In gas chromatography, compound with higher boiling points generally (but not necessarily) elute later than compounds with lower boiling points. In a chromatographic separation, a compound with a capacity factor equal to 1 must spend an equal amount of time in the mobile phase as it does in the stationary phase.
What is the relationship between chemical shift in ppm and operating frequency?
Question 7 TLC is an example of liquid-liquid partition chromatography. A True B) False
Resolution of neightboring peaks is the difference in retention time divided by the average peak width at baseline. True False
6. Compare HPLC, HPTLC and GC chromatography
What are the mechanisms of samples separation work in Thin layer Chromatography? Please shortly answer at your own words. Answer should be to the point (specific 4-5 lines).
For quantitative analysis with gas chromatography: O the area of a peak reported by the instrument for a compound is proportional to the quantity of that compound. O the calculated response factor value for a compound is proportional to the quantity of that compound. O the retention time reported by the instrument for a compound is proportional to the quantity of that compound. O the peak height reported by the instrument for a compound is inversely proportional to the quantity of that compound. O the peak shape reported by the instrument for a compound is proportional to the quantity of that compound.
The figure below shows a portion of a GC chromatogram for a mixture of two aromatic compounds labeled A and B. The separation employed a 2.50 meter packed column under isothermal conditions (90 °C) and a flow rate of 10 mL/min. in (c) Detector Signal 300.0 250.0 200.0 150.0 100.0 50.0 0.0 1.0 Unretained 1.2 1.3 1.4 1.5 time (min) Calculate the retention factors for each peak. 1.5
thin layer chromatography: What would happen to the Rf value of a compound if you increased the polarity of the mobile phase while using a polar stationary phase? please help me this question! Thank you a lot
A student developed a new dye called Dye C. It was analyzed against other dyes using paper chromatography. A solution of 1:1 ethyl acetate:hexane was used as the eluent. The resulting chromatogram is shown in the figure. Determine the retention factor (Rf) values of each spot on dye C. (use 2 decimal places) What other dye/s are present in dye C and what is the dye with least number of pigments?
Compare the resolution for the two components A and B when (tr)b = 5.0 min and (trla = 4.4 min using: 1-Colmn with L = 900 mm, H = 1.0 mm 2- Column with L= 900 mm, H = 3 mm