Net Ionic Equations and Spectator Ions

The video tutorial explains how to balance the net ionic equation for the reaction between hydrochloric acid (HCl) and lead(II) nitrate (Pb(NO3)2). It begins with balancing the molecular equation, assigning states to each compound based on solubility, and then splitting strong electrolytes into ions for the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The tutorial concludes by emphasizing the conservation of charge and mass in the balanced equation.

What is the first step in balancing the net ionic equation for HCl and Pb(NO3)2?

• Assigning states to each substance

• Balancing the molecular equation

• Splitting into ions

• Removing spectator ions

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

• To balance the oxygen atoms

• To balance the hydrogen atoms

• To balance the lead atoms

• To balance the chlorine atoms

What state is assigned to hydrochloric acid in the reaction?

• Aqueous

• Solid

• Liquid

• Gas

Which of the following is considered insoluble in the reaction?

• PbCl2

• HNO3

• Pb(NO3)2

• HCl

What is the charge of the lead ion in Pb(NO3)2?

• 4+

• 2+

• 1+

• 3+

What is the purpose of splitting strong electrolytes into ions?

• To balance the equation

• To identify spectator ions

• To assign states

• To determine solubility

Which ions are considered spectator ions in this reaction?

• Hydrogen ions

• Chloride ions

• Lead ions

• Nitrate ions

What happens to spectator ions in the net ionic equation?

• They are included in the equation

• They are removed from the equation

• They are balanced separately

• They are converted to solids

What is conserved in the final net ionic equation?

• Only charge

• Only mass

• Neither mass nor charge

• Both mass and charge

What is the final product of the reaction between HCl and Pb(NO3)2?

• Pb(NO3)2 and H2O

• PbCl2 and H2O

• Pb(NO3)2 and HCl

• PbCl2 and HNO3