Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between ammonium oxalate and aluminum perchlorate. It begins with balancing the molecular equation, identifying soluble and insoluble compounds, and then splitting strong electrolytes into ions for the complete ionic equation. Spectator ions are identified and crossed out to derive the net ionic equation, ensuring charge conservation and atom balance.

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

• Determine solubility

• Write the complete ionic equation

• Balance the molecular equation

• Identify spectator ions

How many oxalate ions are needed to balance the equation with ammonium oxalate?

• 1

• 2

• 3

• 4

What is the coefficient of aluminum perchlorate in the balanced molecular equation?

• 4

• 3

• 2

• 1

Which compound is insoluble and forms a precipitate in the reaction?

• Ammonium oxalate

• Ammonium perchlorate

• Aluminum perchlorate

• Aluminum oxalate

What is the role of spectator ions in a net ionic equation?

• They balance the charge

• They form the precipitate

• They are removed from the equation

• They participate in the reaction

How many ammonium ions are present on both sides of the complete ionic equation?

• 2

• 4

• 6

• 8

Which ions are crossed out as spectator ions in the net ionic equation?

• Ammonium and oxalate

• Perchlorate and aluminum

• Ammonium and perchlorate

• Oxalate and aluminum

What is the net charge of the balanced net ionic equation?

• Variable

• Zero

• Negative

• Positive

What must be conserved in a balanced net ionic equation?

• Mass only

• Charge only

• Both mass and charge

• Neither mass nor charge

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

• Ensuring charge balance

• Identifying spectator ions

• Writing the states of matter

• Balancing atoms