Chapter 19, Problem 84A

a.

Interpretation Introduction

Interpretation : The formula and name of the conjugate base of each Bronsted-Lowry acid are to be written.

Concept Introduction : The adjective conjugate is used to differentiate the reactants from the products of the forward reaction. This word's root is a Latin verb that means "to connect together."

Answer to Problem 84A

The formula and name of the conjugate base are ${\text{CO}}_3^{2-}$ and carbonate ions respectively.

Explanation of Solution

An ion or molecule that is left over after an acid loses a hydrogen ion is known as a conjugate base.

The given acid is ${\text{HCO}}_{\text{3}}^{-}$ .

The acid loses a hydrogen ion which is given below:

  ${\text{HCO}}_{\text{3}}^{-}\to {\text{H}}^{+}+{\text{CO}}_3^{2-}$

  ${\text{CO}}_3^{2-}$ is the conjugate base since it is one left over after losing a hydrogen ion.

The name of it is carbonate ion.

b.

Interpretation Introduction

Interpretation : The formula and name of the conjugate base of each Bronsted-Lowry acid are to be written.

Concept Introduction : The adjective conjugate is used to differentiate the reactants from the products of the forward reaction. This word's root is a Latin verb that means "to connect together."

Answer to Problem 84A

The formula and name of the conjugate base are ${\text{NH}}_3$ and ammonia respectively.

Explanation of Solution

An ion or molecule that is left over after an acid loses a hydrogen ion is known as a conjugate base.

The given acid is ${\text{NH}}_4^{+}$ .

The acid loses a hydrogen ion which is given below:

  ${\text{NH}}_4^{+}\to {\text{H}}^{+}+{\text{NH}}_3$

  ${\text{NH}}_3$ is the conjugate base since it is one left over after losing a hydrogen ion.

The name of it is ammonia.

c.

Interpretation Introduction

Interpretation : The formula and name of the conjugate base of each Bronsted-Lowry acid are to be written.

Concept Introduction : The adjective conjugate is used to differentiate the reactants from the products of the forward reaction. This word's root is a Latin verb that means "to connect together."

Answer to Problem 84A

The formula and name of the conjugate base are ${\text{I}}^{-}$ and iodide ion respectively.

Explanation of Solution

An ion or molecule that is left over after an acid loses a hydrogen ion is known as a conjugate base.

The given acid is $\text{HI}$ .

The acid loses a hydrogen ion which is given below:

  $\text{HI}\to {\text{H}}^{+}+{\text{I}}^{-}$

  ${\text{I}}^{-}$ is the conjugate base since it is one left over after losing a hydrogen ion.

The name of it is iodide ion.

d.

Interpretation Introduction

Interpretation : The formula and name of the conjugate base of each Bronsted-Lowry acid are to be written.

Concept Introduction : The adjective conjugate is used to differentiate the reactants from the products of the forward reaction. This word's root is a Latin verb that means "to connect together."

Answer to Problem 84A

The formula and name of the conjugate base are ${\text{HSO}}_3^{-}$ and hydrogen sulfite ions respectively.

Explanation of Solution

An ion or molecule that is left over after an acid loses a hydrogen ion is known as a conjugate base.

The given acid is ${\text{H}}_2{\text{SO}}_3$ .

The acid loses a hydrogen ion which is given below:

  ${\text{H}}_2{\text{SO}}_3\to {\text{H}}^{+}+{\text{HSO}}_3^{-}$

  ${\text{HSO}}_3^{-}$ is the conjugate base since it is one left over after losing a hydrogen ion.

The name of it is hydrogen sulfite ion.