(a) A particular solution in a particular capillary has an electroosmotic mobility of

Chapter 25, Problem 25-35

(choose chapter or problem)

(a) A particular solution in a particular capillary has an electroosmotic mobility of 1.3 108 m2 /(V s) at pH 2 and 8.1 108 m2 /(V s) at pH 12. How long will it take a neutral solute to travel 52 cm from the injector to the detector if 27 kV is applied across the 62-cm-long capillary tube at pH 2? At pH 12? (b) An analyte anion has an electrophoretic mobility of 1.6 108 m2 /(V s). How long will it take to reach the detector at pH 2? At pH 12? 25-

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