The Van Deemter Equation Describes Plate Height in Terms of Constants

Multiple Choice

The van Deemter equation describes plate height in terms of constants A,B,C,and the linear velocity,u_x.Which statement is NOT true for the van Deemter equation?

A) A takes into account multiple pathways through the column.The value of A is column specific and independent of linear flow.
B) B takes into account longitudinal diffusion of the analyte in the mobile phase.The value of B is column specific and the impact of B on the plate height is inversely proportional to the linear velocity.
C) C takes into account equilibrium time between the stationary and mobile phase.The value of C is column specific and the impact of C on plate height is proportional to the linear velocity.
D) To minimize plate height,the optimal flow rate is the minima for the plot of

Versus flow rate.
E) Linear velocity is the flow rate of the mobile phase.