Chapter 26, Problem 26.14QAP

Interpretation Introduction

(a)

Interpretation:

Number of plates from each plate should be calculated.

Concept introduction:

Number of theoretical plates given by following equation;

$\text{N = 16}{\left(\frac{{\text{t}}_{\text{R}}}{\text{W}}\right)}^{\text{2}}$

N = number of plates

t_R = retention time

W = width of peak base

Interpretation Introduction

(b)

Interpretation:

Mean and standard deviation for the N should be calculated.

Concept introduction:

Mean = $\frac{N_A+N_B+N_C+N_D}{4}$

Standard deviation will give how the values deviate from mean value of N.

Interpretation Introduction

(c)

Interpretation:

Plate height of the column should be determined.

Concept introduction:

$\text{N=}\frac{\text{L}}{\text{H}}$

N = plate count

L = length of the packing (cm)

H = height of the column