Chapter 5, Problem 21Q

(a)

Interpretation Introduction

Interpretation:

The given concentration of mercury corresponds to $\text{2 ppm or 2 ppb}$ has to be identified.

Concept Introduction:

Parts per billion: One parts per billion of any substance in water is equivalent to 1 microgram of that substance dissolved in a liter of solution.

    $\text{1ppb}\text{=}\frac{\text{1 μg solute}}{\text{1 L water}}$

Parts per million: One parts per billion of any substance in water is equivalent to 1 milligram of that substance dissolved in a liter of solution.

    $\text{1ppm}\text{=}\frac{\text{1 mg solute}}{\text{1 L water}}$

(b)

Interpretation Introduction

Interpretation:

The form of mercury in drinking water has to be determined.