Net Ionic Equations and Charge Balance

The video tutorial explains how to write and balance net ionic equations, using cobalt(III) nitrate and potassium hydroxide as examples. It covers balancing the molecular equation, determining the states of compounds, and writing complete and net ionic equations. The tutorial emphasizes the importance of identifying spectator ions and ensuring charge balance in the final net ionic equation.

What is the first step in writing a net ionic equation?

• Identify spectator ions

• Balance the molecular equation

• Determine the states of compounds

• Write the complete ionic equation

How do you balance the nitrates in the molecular equation?

• Add a coefficient of 2 in front of cobalt(III) nitrate

• Add a coefficient of 3 in front of potassium nitrate

• Add a coefficient of 3 in front of cobalt(III) nitrate

• Add a coefficient of 2 in front of potassium nitrate

Which of the following compounds is insoluble in water?

• Potassium nitrate

• Cobalt(III) hydroxide

• Cobalt(III) nitrate

• Potassium hydroxide

What happens to cobalt(III) hydroxide in the reaction?

• It remains as ions in solution

• It forms a precipitate

• It reacts with potassium ions

• It dissolves in water

What is the purpose of writing a complete ionic equation?

• To split strong electrolytes into ions

• To determine the states of compounds

• To balance the charges

• To identify the precipitate

Which ions are considered spectator ions in this reaction?

• Cobalt ions

• Hydroxide ions

• Nitrate ions

• Hydrogen ions

What is the net charge on the left side of the net ionic equation?

• Three minus

• Three plus

• One plus

• Zero

What is the net charge on the right side of the net ionic equation?

• One plus

• Three minus

• Zero

• Three plus

Why is it important to ensure charge balance in a net ionic equation?

• To identify spectator ions

• To determine the states of compounds

• To predict the products of the reaction

• To ensure the reaction is balanced

What is the final step in writing a net ionic equation?

• Determine the states of compounds

• Identify spectator ions

• Balance the molecular equation

• Ensure charge and atom balance