Chapter 11.3, Problem 28SP

Interpretation Introduction

Interpretation: To determine the net ionic equation of the given reaction.

Concept Introduction: In a liquid or solid medium, an ionic reaction typically takes place when anions and cations interact to form a compound. When the ions of salts that are soluble in water interact with one another, water-insoluble salts are produced.

Answer to Problem 28SP

The net ionic equation will be ${\text{ Fe}}^{\text{3+}}\left(\text{aq}\right){\text{+ 3OH}}^{-}\left(\text{aq}\right)\to \text{ Fe}{\left(\text{OH}\right)}_{\text{3}}\left(\text{s}\right)$

Explanation of Solution

When iron nitrate reacts with iron hydroxide then it will form iron hydroxide and sodium nitrate.

Its chemical reaction can be written as:

  ${\text{Fe(NO}}_3{)}_3\left(\text{aq}\right)\text{+ NaOH}\left(\text{aq}\right)\to \text{ Fe}{\left(\text{OH}\right)}_{\text{3}}\left(\text{s}\right)+{\text{Na(NO}}_{\text{3}}\text{)}$

The given ionic equation is:

  $\begin{array}{l}{\text{Fe}}^{\text{3+}}\left(\text{aq}\right){\text{ + 3NO}}_{\text{3}}^{-}\left(\text{aq}\right){\text{ + 3Na}}^{\text{+}}\left(\text{aq}\right){\text{ + 3OH}}^{-}\left(\text{aq}\right)\to \text{ Fe}{\left(\text{OH}\right)}_{\text{3}}\left(\text{s}\right){\text{ + 3Na}}^{\text{+}}\left(\text{aq}\right){\text{ + 3NO}}_{\text{3}}^{\text{-}}\left(\text{aq}\right)\\ \end{array}$ The net ionic equation is,

  ${\text{ Fe}}^{\text{3+}}\left(\text{aq}\right){\text{+ 3OH}}^{-}\left(\text{aq}\right)\to \text{ Fe}{\left(\text{OH}\right)}_{\text{3}}\left(\text{s}\right)$