Net Ionic Equations and Spectator Ions

This video tutorial guides viewers through writing a balanced net ionic equation for the reaction between calcium bromide and sodium phosphate. It begins with balancing the molecular equation, followed by determining the solubility and states of the compounds involved. The tutorial then explains how to split strong electrolytes into ions to form the complete ionic equation. Finally, it identifies and removes spectator ions to derive the net ionic equation, ensuring both atoms and charges are balanced.

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

• Identify spectator ions

• Write the molecular equation

• Determine the solubility

• Balance the charges

How do you determine the state of calcium phosphate in the reaction?

• By measuring its pH

• By observing its odor

• By using solubility rules

• By checking its color

Which compound is a precipitate in the reaction between calcium bromide and sodium phosphate?

• Sodium phosphate

• Calcium phosphate

• Sodium bromide

• Calcium bromide

Which of the following is a characteristic of strong electrolytes?

• They form a precipitate

• They completely dissociate into ions

• They partially ionize in solution

• They do not dissolve in water

What is the charge of a calcium ion in the complete ionic equation?

• 0

• 3+

• 2+

• 1+

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

• They form a new compound

• They remain unchanged and do not participate

• They change the color of the solution

• They participate in the reaction

Why are sodium ions considered spectator ions in this reaction?

• They form a precipitate

• They are insoluble

• They change the pH of the solution

• They do not change during the reaction

What ensures that a net ionic equation is correctly balanced?

• Equal number of atoms and charges on both sides

• Equal number of molecules on both sides

• Presence of spectator ions

• Presence of a precipitate

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

• 6+

• 0

• 12+

• 6-

What is the significance of balancing charges in a net ionic equation?

• To maintain electrical neutrality

• To ensure the reaction is spontaneous

• To increase the reaction rate

• To form a precipitate