Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between ammonium sulfide and cobalt(II) chloride. It begins with balancing the molecular equation, then discusses the solubility and states of the compounds involved. The tutorial proceeds to form the complete ionic equation by splitting strong electrolytes into ions. Spectator ions are identified and removed to derive the net ionic equation. The video concludes by ensuring charge conservation and atom balance in the final equation.

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

• Balance the molecular equation

• Write the complete ionic equation

• Identify spectator ions

• Determine the solubility of compounds

How do you balance the molecular equation for ammonium sulfide and cobalt(II) chloride?

• Add a coefficient of 3 to cobalt(II) chloride

• Add a coefficient of 2 to ammonium chloride

• Add a coefficient of 2 to cobalt(II) sulfide

• Add a coefficient of 3 to ammonium sulfide

Which of the following compounds is generally insoluble?

• Ammonium sulfide

• Cobalt(II) sulfide

• Cobalt(II) chloride

• Ammonium chloride

What is the state of ammonium chloride in the reaction?

• Solid

• Liquid

• Aqueous

• Gas

What is the charge of the cobalt ion in cobalt(II) chloride?

• 0

• 3+

• 2+

• 1+

What is the purpose of writing the complete ionic equation?

• To split strong electrolytes into ions

• To determine solubility

• To balance the charges

• To identify the precipitate

Which ions are considered spectator ions in this reaction?

• Sulfide and cobalt ions

• Ammonium and chloride ions

• Cobalt and chloride ions

• Ammonium and sulfide ions

What is the net charge on both sides of the net ionic equation?

• 0

• 1+

• 2-

• 2+

Why is it important to remove spectator ions in the net ionic equation?

• To simplify the equation

• To balance the equation

• To identify the precipitate

• To determine solubility

What is the final product formed in the reaction between ammonium sulfide and cobalt(II) chloride?

• Ammonium chloride

• Cobalt(II) sulfide

• Cobalt(II) chloride

• Ammonium sulfide