Questions: Write a net ionic equation when ferric chloride and sodium hydroxide mix together.

Write a net ionic equation when ferric chloride and sodium hydroxide mix together.
Transcript text: Write a net ionic equation when ferric chloride and sodium hydroxide mix together.
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Solution

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Solution Steps

Step 1: Write the Balanced Molecular Equation

When ferric chloride (\(\text{FeCl}_3\)) reacts with sodium hydroxide (\(\text{NaOH}\)), a double displacement reaction occurs, forming ferric hydroxide (\(\text{Fe(OH)}_3\)) and sodium chloride (\(\text{NaCl}\)). The balanced molecular equation is:

\[ \text{FeCl}_3(aq) + 3\text{NaOH}(aq) \rightarrow \text{Fe(OH)}_3(s) + 3\text{NaCl}(aq) \]

Step 2: Write the Complete Ionic Equation

Next, we write the complete ionic equation by dissociating all the soluble ionic compounds into their respective ions:

\[ \text{Fe}^{3+}(aq) + 3\text{Cl}^-(aq) + 3\text{Na}^+(aq) + 3\text{OH}^-(aq) \rightarrow \text{Fe(OH)}_3(s) + 3\text{Na}^+(aq) + 3\text{Cl}^-(aq) \]

Step 3: Identify and Remove Spectator Ions

Spectator ions are ions that appear on both sides of the complete ionic equation and do not participate in the reaction. In this case, the spectator ions are \(\text{Na}^+\) and \(\text{Cl}^-\).

Step 4: Write the Net Ionic Equation

After removing the spectator ions, the net ionic equation is:

\[ \text{Fe}^{3+}(aq) + 3\text{OH}^-(aq) \rightarrow \text{Fe(OH)}_3(s) \]

Final Answer

The net ionic equation for the reaction between ferric chloride and sodium hydroxide is:

\[ \boxed{\text{Fe}^{3+}(aq) + 3\text{OH}^-(aq) \rightarrow \text{Fe(OH)}_3(s)} \]

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