Chapter 8.1, Problem 6RQ

(a)

Interpretation Introduction

Interpretation:

The molecular equation for the reaction of aqueous sodium sulfate with aqueous barium bromide to form solid barium sulfate and aqueous sodium bromide is to be stated.

Concept Introduction:

An ionic equation is a balanced molecular equation in which the strong electrolytes are broken down to form their ions that are dissolved in an aqueous solution.

Explanation of Solution

The molecular reaction between aqueous solutions of given ionic compounds is shown below:

  ${\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}\left(\text{aq}\right)+{\text{BaBr}}_{\text{2}}\left(\text{aq}\right)\to {\text{BaSO}}_{\text{4}}\left(\text{s}\right)+{\text{2NaBr}}_{\text{2}}\left(\text{aq}\right)$

(b)

Interpretation Introduction

Interpretation:

The complete ionic equation for the reaction of aqueous sodium sulfate with aqueous barium bromide to form solid barium sulfate and aqueous sodium bromide is to be stated.

Concept Introduction:

An ionic equation is a balanced molecular equation in which the strong electrolytes are broken down to form their ions that are dissolved in an aqueous solution.

Answer to Problem 6RQ

The complete ionic equation for the reaction of aqueous sodium sulfate with aqueous barium bromide to form solid barium sulfate and aqueous sodium bromide is shown below:

  ${\text{2Na}}^{+}\left(\text{aq}\right)+2{\text{SO}}_{\text{4}}{}^{2-}\left(\text{aq}\right)+{\text{Ba}}^{2+}\left(\text{aq}\right){\text{+2Br}}^{-}\left(\text{aq}\right)\to {\text{BaSO}}_{\text{4}}\left(\text{s}\right)+{\text{2Na}}^{+}+{\text{2Br}}^{-}\left(\text{aq}\right)$

Explanation of Solution

While writing the ionic equation, all the ionic compounds in aqueous form undergo dissociation while solid form will not dissociate as shown below:

  ${\text{2Na}}^{+}\left(\text{aq}\right)+2{\text{SO}}_{\text{4}}{}^{2-}\left(\text{aq}\right)+{\text{Ba}}^{2+}\left(\text{aq}\right){\text{+2Br}}^{-}\left(\text{aq}\right)\to {\text{BaSO}}_{\text{4}}\left(\text{s}\right)+{\text{2Na}}^{+}+{\text{2Br}}^{-}\left(\text{aq}\right)$

(c)

Interpretation Introduction

Interpretation:

The spectator ions in the reaction of aqueous sodium sulfate with aqueous barium bromide to form solid barium sulfate and aqueous sodium bromide are to be stated.

Concept Introduction:

An ionic equation is a balanced molecular equation in which the strong electrolytes are broken down to form their ions that are dissolved in an aqueous solution.

Answer to Problem 6RQ

The spectator ions in the reaction of aqueous sodium sulfate with aqueous barium bromide to form solid barium sulfate and aqueous sodium bromide are ${\text{Na}}^{+}$ and ${\text{Br}}^{-}$ .

Explanation of Solution

The complete ionic equation is shown below:

  ${\text{2Na}}^{+}\left(\text{aq}\right)+2{\text{SO}}_{\text{4}}{}^{2-}\left(\text{aq}\right)+{\text{Ba}}^{2+}\left(\text{aq}\right){\text{+2Br}}^{-}\left(\text{aq}\right)\to {\text{BaSO}}_{\text{4}}\left(\text{s}\right)+{\text{2Na}}^{+}+{\text{2Br}}^{-}\left(\text{aq}\right)$

Similar ions present on both sides of the equation are known as spectator ions. Therefore, the spectator ions are ${\text{Na}}^{+}$ and ${\text{Br}}^{-}$ .

(d)

Interpretation Introduction

Interpretation:

The net ionic equation for the reaction of aqueous sodium sulfate with aqueous barium bromide to form solid barium sulfate and aqueous sodium bromide is to be stated.

Concept Introduction:

An ionic equation is a balanced molecular equation in which the strong electrolytes are broken down to form their ions that are dissolved in an aqueous solution.

Answer to Problem 6RQ

The net ionic equation for the reaction of aqueous sodium sulfate with aqueous barium bromide to form solid barium sulfate and aqueous sodium bromide is shown below:

  ${\text{Ba}}^{2+}\left(\text{aq}\right)+{\text{SO}}_{\text{4}}{}^{2-}\left(\text{aq}\right)\to {\text{BaSO}}_{\text{4}}\left(\text{s}\right)$

Explanation of Solution

Remove the species that appear on both sides of the ionic equation to get the net ionic equation as shown below:

  ${\text{Ba}}^{2+}\left(\text{aq}\right)+{\text{SO}}_{\text{4}}{}^{2-}\left(\text{aq}\right)\to {\text{BaSO}}_{\text{4}}\left(\text{s}\right)$