A certain inorganic cation has an electrophoretic mobility of 4.31 x 10-4 cm2 s-1 V-1. This same ion has a diffusion coefficient of9.8 X 10-6 cm-1 s-1. If this ion is separated from other cations by CZE with a 50.0-cm capillary, what is the expected plate count N at applied voltages of
(a) 5.0 kV?
(b) 10.0 kV?
(c) 30.0 kV?