Which is true for plate height?
I The smaller the plate height,the narrower the peaks.
II The larger the plate height,the better separation between peaks.
III Plate height can be calculated from the column length,L,and the number of theoretical plates,N.
IV For fixed number of theoretical plates,N,the longer a solute is on column,the wider the peak will become.
A)I,II,and IV
B)II and IV
C)I,III,and IV
D)II only
E)IV only

Question

Quizplus · Accepted Answer

I is true because the narrower peaks indicate better separation. II is also true because the larger plate height provides better separation between the peaks. III is true because plate height can be calculated using the formula H = L/N, where L is the column length and N is the number of theoretical plates. IV is also true because the longer a solute spends on the column, the more it interacts with the stationary phase, and the wider the peak becomes.

Which Is True for Plate Height