Chapter 22, Problem 22.9P

(a)

Interpretation Introduction

Interpretation:

Manner retention times will be affected if $\text{95 \%}$ methanol was used instead of $65\text{ \%}$ has to be calculated.

Concept Introduction:

Faster the elution process of a polar solvent lower the retention time for non polar analyte separation. On the other hand, faster the elution process of a non-polar or less polar solvent more the retention time.

(b)

Interpretation Introduction

Interpretation:

Manner retention times will be affected has to be given.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

Manner retention times will be affected if $\text{90 \%}$ acetonitrile was used instead of $\text{80 \%}$ has to be calculated.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

Manner retention times will be affected if $\text{60 \%}$ Propanol was used instead of $\text{40 \%}$ has to be calculated.

Concept Introduction:

Refer to part (a).