Consider the following chromatographic data for the separation of methylparaben from ethylparaben in a sunscreen sample. Compound Methylparaben Retention time, tr (min). Width at base of peak, Wb (min) 3.2 4.2 0.55 0.60 Ethylparaben A compound not retained by the column in this analysis had a tm of 0.75 minutes. The column used was a C18 column with a mobile phase mixture of 75% methanol and 25% water. Calculate the number of theoretical plates for ethylparaben.

Consider the following chromatographic data for the separation of methylparaben from ethylparaben in a sunscreen sample. Compound Methylparaben Retention time, tr (min). Width at base of peak, Wb (min) 3.2 4.2 0.55 0.60 Ethylparaben A compound not retained by the column in this analysis had a tm of 0.75 minutes. The column used was a C18 column with a mobile phase mixture of 75% methanol and 25% water. Calculate the number of theoretical plates for ethylparaben.

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...

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