Chapter 19, Problem 88A

Interpretation Introduction

Interpretation : Each reactant is to be identified as an acid or a base.

Concept Introduction : Acids are substances that contain hydrogen and ionize to produce hydrogen ions $\left({\text{H}}^{\text{+}}\right)$ in an aqueous solution. Bases are substances that ionize in aqueous solutions to produce hydroxide ions $\left({\text{OH}}^{-}\right)$ .

Answer to Problem 88A

The reactants $\text{KOH}$ is a base and $\text{HBr}$ is an acid.

Explanation of Solution

According to Bronsted-Lowry theory, A hydrogen ion that acts as a donor is an acid while a hydrogen ion that acts as an acceptor is a base.

According to Lewis’s definition, during a reaction, an acid takes in a pair of electrons and a base indicates a pair of electrons.

The given reaction is given as

  $\text{KOH}\left(aq\right)+\text{HBr}\left(aq\right)\to \text{KBr}\left(aq\right)+{\text{H}}_{\text{2}}\text{O}\left(l\right)$

According to Lewis’s definition, $\text{KOH}$ is a base and $\text{HBr}$ is an acid.

Interpretation Introduction

Interpretation : Each reactant is to be identified as an acid or a base.

Concept Introduction : Acids are substances that contain hydrogen and ionize to produce hydrogen ions $\left({\text{H}}^{\text{+}}\right)$ in an aqueous solution. Bases are substances that ionize in aqueous solutions to produce hydroxide ions $\left({\text{OH}}^{-}\right)$ .

Answer to Problem 88A

The reactants ${\text{H}}_2\text{O}$ is a base and $\text{HCl}$ is an acid.

Explanation of Solution

According to Bronsted-Lowry theory, A hydrogen ion that acts as a donor is an acid while a hydrogen ion that acts as an acceptor is a base.

According to Lewis’s definition, during a reaction, an acid takes in a pair of electrons and a base indicates a pair of electrons.

The given reaction is given as

  $\text{HCl}\left(aq\right)+{\text{H}}_2\text{O}\left(aq\right)\to {\text{Cl}}^{-}\left(aq\right)+{\text{H}}_3{\text{O}}^{+}\left(l\right)$

According to Lewis’s definition, ${\text{H}}_2\text{O}$ is a base and $\text{HCl}$ is an acid.