Chapter 24, Problem 24.25P

a)

Interpretation Introduction

Interpretation:

The reason why air can be used as carrier gas and the risk of using air as carrier gas has to be explained.

To explain the reason why air can be used as carrier gas and the risk of using air as carrier gas

b)

Interpretation Introduction

Interpretation:

The optimum velocity and plate height for the air and ${\text{H}}_{\text{2}}$ carrier gas has to be measured.

To measure the optimum velocity and plate height for the air and ${\text{H}}_{\text{2}}$ carrier gas

c)

Interpretation Introduction

Interpretation:

The number of plates present in 3 m long column for each carrier gas at optimum flow rate has to be calculated.

To calculate the number of plates present in 3 m long column for each carrier gas at optimum flow rate

d)

Interpretation Introduction

Interpretation:

The time duration for unretained gas to travel through the column for each carrier gas at optimum velocity has to be calculated.

To calculate time duration for unretained gas to travel through the column for each carrier gas at optimum velocity

e)

Interpretation Introduction

Interpretation:

The two mass transfer terms that becomes negligible has to be identified and reason has to be explained.

To identify the two mass transfer terms that becomes negligible and to explain their reason

f)

Interpretation Introduction

Interpretation:

The reason why there is loss of column efficiency at high flow rates serves less for ${\text{H}}_{\text{2}}$ than for air as carrier gas.

To explain the reason why there is loss of column efficiency at high flow rates serves less for ${\text{H}}_{\text{2}}$ than for air as carrier gas