Net Ionic Equations and Spectator Ions

The video tutorial explains how to write and balance net ionic equations using zinc nitrate and sodium phosphate as examples. It begins with balancing the molecular equation, identifying the solubility and states of the compounds, and then forming the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The tutorial concludes by verifying the balance of charges and atoms in the final equation.

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

• Identify spectator ions

• Balance the molecular equation

• Write the complete ionic equation

• Determine the solubility of compounds

How many zinc atoms are needed to balance the molecular equation for zinc nitrate and sodium phosphate?

• One

• Four

• Two

• Three

Which of the following compounds is generally insoluble?

• Sodium nitrate

• Zinc phosphate

• Sodium phosphate

• Zinc nitrate

What happens to compounds with nitrate ions in a solution?

• They react with water

• They form a precipitate

• They remain undissolved

• They dissociate into ions

What is the role of spectator ions in a chemical reaction?

• They form a new compound

• They change the color of the solution

• They participate in the reaction

• They remain unchanged and do not participate

Which ions are considered spectator ions in the reaction between zinc nitrate and sodium phosphate?

• Zinc ions

• Phosphate ions

• Nitrate ions

• Sodium ions

What is the net ionic equation used for?

• To show only the ions that participate in the reaction

• To identify the products of a reaction

• To show all compounds in a reaction

• To balance the charges in a reaction

How is charge balance achieved in a net ionic equation?

• By adding more reactants

• By changing the state of compounds

• By ensuring the total positive and negative charges are equal

• By removing spectator ions

What is the charge of the zinc ion in the net ionic equation?

• +2

• +3

• 0

• +1

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

• Writing the complete ionic equation

• Identifying spectator ions

• Balancing the molecular equation

• Ensuring charge and atom balance