Net Ionic Equations and Spectator Ions

The video tutorial explains how to write net ionic equations, starting with balancing the molecular equation for zinc and copper sulfate. It then details the process of writing the total ionic equation by breaking down compounds into their ionic forms. Finally, it demonstrates how to derive the net ionic equation by canceling out ions that appear on both sides of the equation.

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

• Balance the molecular equation

• Write the total ionic equation

• Determine the charges of ions

• Identify spectator ions

What does it mean when a molecular equation is balanced?

• The equation is written in ionic form

• The charges are equal on both sides

• The number of atoms of each element is the same on both sides

• The equation has no spectator ions

What is the charge of the sulfate ion (SO4) in the total ionic equation?

• 1-

• 1+

• 2-

• 2+

In the total ionic equation, what is the state of zinc (Zn)?

• Gas

• Liquid

• Aqueous

• Solid

Which ion is considered a spectator ion in the reaction between Zn and CuSO4?

• Cu

• SO4 2-

• Cu2+

• Zn2+

What is the purpose of identifying spectator ions in a reaction?

• To balance the equation

• To simplify the equation by removing unchanged ions

• To determine the products of the reaction

• To find the limiting reactant

What is the net ionic equation for the reaction between Zn and CuSO4?

• Cu2+ + SO4 2- → CuSO4

• Zn2+ + SO4 2- → ZnSO4

• Zn + CuSO4 → ZnSO4 + Cu

• Zn + Cu2+ → Zn2+ + Cu

What happens to the sulfate ion in the net ionic equation?

• It reacts with zinc

• It forms a precipitate

• It combines with copper

• It remains unchanged as a spectator ion

Why is it important to write a net ionic equation?

• To show all reactants and products

• To identify the limiting reactant

• To highlight the actual chemical change

• To balance the charges

What is the final product formed in the reaction between Zn and CuSO4?

• Cu

• Zn

• CuSO4

• ZnSO4