Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between copper(II) nitrate and ammonium sulfide. It begins with balancing the molecular equation, followed by determining the states of substances using solubility rules. The tutorial then demonstrates how to form the complete ionic equation by splitting strong electrolytes into ions. Spectator ions are identified and removed to derive the net ionic equation. The video concludes by ensuring charge conservation and atom balance in the final equation.

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

• Write the complete ionic equation

• Determine the solubility of compounds

• Balance the molecular equation

• Identify spectator ions

Which of the following is generally soluble in water?

• Carbonates

• Phosphates

• Nitrates

• Sulfides

What is the charge of the copper ion in copper(II) nitrate?

• 0

• 3+

• 2+

• 1+

Why don't we split solids in net ionic equations?

• They are already balanced

• They are insoluble

• They do not contain ions

• They are not reactive

What are spectator ions?

• Ions that participate in the reaction

• Ions that do not change during the reaction

• Ions that form a precipitate

• Ions that are insoluble

Which ions are crossed out in the net ionic equation?

• Ions that form a solid

• Spectator ions

• Ions that are not present in the products

• Ions that are soluble

What is the net charge on both sides of a balanced net ionic equation?

• Varies

• Positive

• Negative

• Zero

What is the purpose of writing a net ionic equation?

• To balance the charges

• To simplify the reaction to only the ions that participate

• To highlight the formation of a precipitate

• To show all compounds involved

How do you confirm that a net ionic equation is balanced?

• Check the charges only

• Check the solubility

• Check the number of atoms only

• Check both the number of atoms and charges

What happens to the charge in a balanced net ionic equation?

• It becomes negative

• It increases

• It decreases

• It remains the same