Consider a capillary electrophoresis experiment conducted near pH 9, at which the
Chapter 25, Problem 25-C(choose chapter or problem)
Consider a capillary electrophoresis experiment conducted near pH 9, at which the electroosmotic flow is stronger than the electrophoretic flow. (a) Draw a picture of the capillary, showing the placement of the anode, cathode, injector, and detector. Show the direction of electroosmotic flow and the direction of electrophoretic flow of a cation and an anion. Show the direction of net flow. (b) Using Table 14-1, explain why Cl has a shorter migration time than I. Predict whether Br will have a shorter migration time than Cl or a greater migration time than I. (c) Why is the mobility of I greater than that of Cl? 25-A. V
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