Chapter 18, Problem 18.58P

(a)

Interpretation Introduction

Interpretation: To determine whether ${\text{HNO}}_{\text{3}}$ is a strong acid or weak acid.

Concept introduction: The acid is classified as strong and weak based on its ability to dissociate into ions when they are made to react with water. Strong acids will completely dissociate into ions when they are made to react with water whereas, weak acids do not completely dissociate in water. Strong acids will also have the highest ${\text{K}}_{\text{a}}$ value and weak acids will have the lowest ${\text{K}}_{\text{a}}$ values.

(b)

Interpretation Introduction

Interpretation: To determine whether $\text{HBr}$ is a strong acid or weak acid.

Concept introduction: The acid is classified as strong and weak based on its ability to dissociate into ions when they are made to react with water. Strong acids will completely dissociate into ions when they are made to react with water whereas, weak acids do not completely dissociate in water. Strong acids will also have the highest ${\text{K}}_{\text{a}}$ value and weak acids will have the lowest ${\text{K}}_{\text{a}}$ values.

(c)

Interpretation Introduction

Interpretation: To determine whether ${\text{H}}_{\text{2}}\text{S}$ is a strong acid or weak acid.

Concept introduction: The acid is classified as strong and weak based on its ability to dissociate into ions when they are made to react with water. Strong acids will completely dissociate into ions when they are made to react with water whereas, weak acids do not completely dissociate in water. Strong acids will also have the highest ${\text{K}}_{\text{a}}$ value and weak acids will have the lowest ${\text{K}}_{\text{a}}$ values.

(d)

Interpretation Introduction

Interpretation: To determine whether $\text{HCOOH}$ is a strong acid or weak acid.

Concept introduction: The acid is classified as strong and weak based on its ability to dissociate into ions when they are made to react with water. Strong acids will completely dissociate into ions when they are made to react with water whereas, weak acids do not completely dissociate in water. Strong acids will also have the highest ${\text{K}}_{\text{a}}$ value and weak acids will have the lowest ${\text{K}}_{\text{a}}$ values.