Net Ionic Equations and Spectator Ions

This video tutorial guides viewers through balancing the net ionic equation for sodium sulfide and lead(II) nitrate. It begins with balancing the molecular equation, identifying the states of substances, and then breaking down the strong electrolytes into ions for the complete ionic equation. Finally, the net ionic equation is derived by removing spectator ions, ensuring charge and mass conservation.

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

• Identify spectator ions

• Balance the molecular equation

• Assign states to compounds

• Write the complete ionic equation

Why is a '2' placed in front of NaNO3 in the molecular equation?

• To balance lead atoms

• To balance nitrate ions

• To balance sodium atoms

• To balance sulfur atoms

Which of the following compounds is typically insoluble in water?

• Sodium sulfide

• Lead(II) nitrate

• Lead(II) sulfide

• Sodium nitrate

What state is assigned to sodium compounds in aqueous solutions?

• Solid

• Liquid

• Gas

• Aqueous

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

• 2+

• 1+

• 1-

• 2-

In the complete ionic equation, which ion is not split into its components?

• Lead(II) sulfide

• Nitrate ion

• Sulfide ion

• Sodium ion

What is the purpose of identifying spectator ions?

• To determine solubility

• To assign charges

• To balance the equation

• To simplify the net ionic equation

Which ions are removed as spectator ions in this reaction?

• Sodium and nitrate ions

• Lead and sulfide ions

• Sodium and sulfide ions

• Lead and nitrate ions

What is conserved in a balanced net ionic equation?

• Only mass

• Neither mass nor charge

• Only charge

• Both mass and charge

Why might the positive ion be placed first in a net ionic equation?

• It is more accurate

• It changes the equation

• It looks nicer

• It is a rule of thumb