Chapter 23, Problem 23.25P

(a)

Interpretation Introduction

Interpretation:

The purpose of the use initial filtration through a $\text{0}\text{.45}\text{μm}$ filter has to be explained.

Concept Introduction:

Filtration is a very commonly used separation procedure that separates the solid particles from liquid or gases with the help of a filter medium.

(b)

Interpretation Introduction

Interpretation:

Cause of the passage the solution through an anion exchange resin has to be explained.

Concept Introduction:

Chromatography is a separation technique in analytical chemistry, in which the components of a mixture are separated by their distribution in stationary bonded phase and mobile Phase. The solutes that are more strongly bonded to the stationary phase are eluted last.

(c)

Interpretation Introduction

Interpretation:

Final chemical form of $\text{S}$ that is measured by the scintillation counting has to be mentioned.

Concept Introduction:

Precipitation reaction indicates the formation of insoluble solid particles from solution. If concentration of two reactant ion in net ionic equation is greater than that of the ${\text{K}}_{\text{SP}}$ of the compound then precipitation occurs.

(d)

Interpretation Introduction

Interpretation:

Reason behind the addition of ${\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}$ prior to anion exchange has to be explained.

Concept Introduction:

Any chemical analysis always has a lower limit of detection, which is the smallest quantity of analyte that is significantly different from the blank.

There is also a quantitation limit, which indicates the smallest amount that can be measured with reasonable accuracy.