Net Ionic Equations and Spectator Ions

This video tutorial explains how to write a balanced net ionic equation for the reaction between sodium hydroxide and lead(II) nitrate. It begins with balancing the molecular equation, followed by determining the states of each substance. The tutorial then demonstrates 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 the charges and atoms are balanced on both sides.

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

• Determine the states of substances

• Balance the molecular equation

• Identify spectator ions

• Write the complete ionic equation

How do you balance the number of nitrate ions in the reaction?

• Add a coefficient of 2 in front of lead(II) nitrate

• Add a coefficient of 2 in front of sodium nitrate

• Add a coefficient of 3 in front of sodium hydroxide

• Add a coefficient of 3 in front of lead(II) hydroxide

Which of the following is a strong base and a strong electrolyte?

• Sodium nitrate

• Sodium hydroxide

• Lead(II) nitrate

• Lead(II) hydroxide

What is the state of sodium nitrate in the reaction?

• Solid

• Liquid

• Gas

• Aqueous

What happens to hydroxide compounds in general?

• They are always liquids

• They are always gases

• They are generally insoluble

• They are always soluble

What is the charge of sodium ions in the complete ionic equation?

• 1-

• 2-

• 1+

• 2+

Why don't we split lead(II) hydroxide in the complete ionic equation?

• It is a gas

• It is a solid precipitate

• It is a weak acid

• It is a strong electrolyte

What are spectator ions?

• Ions that participate in the reaction

• Ions that do not change during the reaction

• Ions that form a precipitate

• Ions that are gases

What is the net ionic equation for the reaction between sodium hydroxide and lead(II) nitrate?

• 2Na+ + 2OH- + Pb2+ + 2NO3- → 2Na+ + 2NO3- + Pb(OH)2

• 2OH- + Pb2+ → Pb(OH)2

• 2Na+ + 2OH- → 2NaOH

• NaOH + Pb(NO3)2 → NaNO3 + Pb(OH)2

What ensures the net ionic equation is balanced?

• Equal number of molecules on both sides

• Equal number of gases on both sides

• Equal number of atoms on both sides

• Equal number of electrons on both sides