Chapter 4, Problem 4.130AP

(a)

Interpretation Introduction

Interpretation: The net ionic equation for the reaction between given compound sis to be written. The concentration of ${\text{F}}^{-}$ ion is to be expressed in molarity. The amount of fluoride in a $100\text{mg}$ sample of bone is to be calculated.

Concept introduction: The net ionic equations of a reaction only represent the compound or ions which are participating in the chemical reaction not the spectator ions.

The number of given moles of solute divided by a liter of solution is termed as molarity. It is expressed in the unit of $\text{mol/L}$ or $\text{M}$.

To determine: The net ionic equation for the reaction between hydroxyapatite $\left({\text{Ca}}_{\text{10}}{\left({\text{PO}}_{\text{4}}\right)}_{\text{6}}{\left(\text{OH}\right)}_{\text{2}}\right)$ and sodium fluoride $\left(\text{NaF}\right)$.

(b)

Interpretation Introduction

To determine: The concentration of ${\text{F}}^{-}$ in molarity.

(c)

Interpretation Introduction

To determine: The amount of fluoride (in milligrams) that is present in a $100\text{mg}$ sample of bone.