Net Ionic Equations and Spectator Ions

This video tutorial guides viewers through writing a balanced net ionic equation for the reaction between zinc chloride and ammonium sulfide. It begins with balancing the molecular equation, followed by determining the solubility and states of the substances involved. The tutorial then explains how to form the complete ionic equation, identify and remove spectator ions, and finalize the net ionic equation, ensuring both charge and atom balance. The video emphasizes understanding solubility rules and the importance of balancing equations in chemistry.

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

• Identify the spectator ions

• Balance the molecular equation

• Determine the solubility of compounds

• Write the complete ionic equation

How do you balance the chlorine atoms in the molecular equation?

• Add a coefficient of 2 in front of zinc sulfide

• Add a coefficient of 2 in front of ammonium sulfide

• Add a coefficient of 2 in front of ammonium chloride

• Add a coefficient of 2 in front of zinc chloride

Which of the following compounds is generally insoluble?

• Zinc sulfide

• Ammonium sulfide

• Ammonium chloride

• Zinc chloride

What is the state of zinc sulfide in the reaction?

• Aqueous

• Liquid

• Solid

• Gas

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

• 1-

• 2-

• 1+

• 2+

Which ions are considered spectator ions in this reaction?

• Chloride ions

• Ammonium ions

• Sulfide ions

• Zinc ions

What is the purpose of identifying spectator ions?

• To simplify the net ionic equation

• To balance the equation

• To determine solubility

• To find the precipitate

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

• 0

• 1+

• 2+

• 2-

What ensures that the net ionic equation is balanced?

• Equal number of atoms on both sides

• Equal number of ions on both sides

• Equal number of compounds on both sides

• Equal number of molecules on both sides

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

• Balancing the molecular equation

• Crossing out spectator ions

• Writing the complete ionic equation

• Determining solubility