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Chapter 17: Problem 71

\(\mathrm{Cd}(\mathrm{OH})_{2}\) is an insoluble compound. It dissolves in a \(\mathrm{NaOH}\) solution. Write a balanced ionic equation for this reaction. What type of reaction is this?

Short Answer

Expert verified
The net ionic equation for the reaction is: Cd(OH)2 (s) ⟶ Cd^2+ (aq) + 2OH^- (aq). This reaction is a dissolution or dissociation reaction.

Step by step solution

01

Write the Balanced Molecular Equation

Cd(OH)2 (s) + 2NaOH (aq) ⟶ Na2Cd(OH)4 (aq)
02

Dissociate All Strong Electrolytes

Cd^2+ (aq) + 2OH^- (aq) + 2Na^+ (aq) + 2OH^- (aq) ⟶ 2Na^+ (aq) + Cd^2+ (aq) + 4OH^- (aq)
03

Cancel the Spectator Ions

From the equation in step 2, we can see the spectator ions are Na^+ and OH^- ions. So, after removing these we can get the net ionic equation: Cd(OH)2 (s) ⟶ Cd^2+ (aq) + 2OH^- (aq)
04

Identify the Type of Reaction

The reaction is a type of dissolution or dissociation reaction, where a compound breaks into its component ions in a solution.

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