Quantitative Chemical Analysis
Quantitative Chemical Analysis
9th Edition
ISBN: 9781464135385
Author: Daniel C. Harris
Publisher: W. H. Freeman
Question
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Chapter 23, Problem 23.19P

(a)

Interpretation Introduction

Interpretation:

The meaning of retention factor has to be given in terms of time spent by solute in each phase.

Concept introduction:

Retention factor:

The retention factor (k) is given by

k=tr-tmtmWhere,k-retentionfactortr-timerequiredtoelutethepeaktm-timerequiredformobilephasetopassthroughthecolumn.

(b)

Interpretation Introduction

Interpretation:

The expression for the fraction of time spent by a solute molecule in the mobile phase in terms of k has to be given.

Concept introduction:

Retention factor:

The retention factor (k) is given by

k=tr-tmtmWhere,k-retentionfactortr-timerequiredtoelutethepeaktm-timerequiredformobilephasetopassthroughthecolumn.

(c)

Interpretation Introduction

Interpretation:

The retention ratio is related to the retention factor by the equation R=1/(1+k) this has to be explained.

Concept introduction:

Retention factor:

The retention factor (k) is given by

k=tr-tmtmWhere,k-retentionfactortr-timerequiredtoelutethepeaktm-timerequiredformobilephasetopassthroughthecolumn.

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