Chapter 18, Problem 18.61P

a)

Interpretation Introduction

Interpretation: The balanced chemical equation and the expression for $K_{\text{a}}$ has to be written for the reaction between ${\text{H}}_{\text{3}}{\text{PO}}_{\text{4}}$ and water.

Concept introduction: Bronsted-Lowry acid will donate a proton to the water. The oxygen in the water molecule will have lone pair of electrons, which will accept the proton from the acid-forming hydronium ion $\left[\text{H}\text{O}{}^{\text{+}}\right]$ . The acid dissociation constant gives the ratio of the product concentration and reactant concentration and the strength of the acid; that is, to what extent the acid dissociates in the solution.

b)

Interpretation Introduction

Interpretation: The balanced equation and the expression for ${\text{K}}_{\text{a}}$ has to be written for the reaction between ${\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{COOH}$ and water.

Concept introduction: Bronsted-Lowry acid will donate a proton to the water. The oxygen in the water molecule will have lone pair of electrons, which will accept the proton from the acid-forming hydronium ion $\left[\text{H}\text{O}{}^{\text{+}}\right]$ . The acid dissociation constant gives the ratio of the product concentration and reactant concentration and the strength of the acid; that is, to what extent the acid dissociates in the solution.

c)

Interpretation Introduction

Interpretation: The balanced equation and the expression for $K_{\text{a}}$ must be written for the reaction between ${\text{HSO}}_{\text{4}}{}^{-}$ and water.

Concept introduction: Bronsted-Lowry acid will donate a proton to the water. The oxygen in the water molecule will have lone pair of electrons which will accept the proton from the acid-forming hydronium ion $\left[\text{H}\text{O}{}^{\text{+}}\right]$ . The acid dissociation constant gives the ratio of the product concentration and reactant concentration and the strength of the acid; that is, to what extent the acid dissociates in the solution.

d)

Interpretation Introduction

Interpretation: The balanced equation and the expression for ${\text{K}}_{\text{a}}$ has to be written for the reaction between $\text{HNO}$ and water.

Concept introduction: Bronsted-Lowry acid will donate a proton to the water. The oxygen in the water molecule will have lone pair of electrons, which will accept the proton from the acid-forming hydronium ion $\left[\text{H}\text{O}{}^{\text{+}}\right]$ . The acid dissociation constant gives the ratio of the product concentration and reactant concentration and the strength of the acid; that is, to what extent the acid dissociates in the solution.