Net Ionic Equations and Spectator Ions

The video tutorial explains how to write the net ionic equation for the reaction between barium chloride (BaCl2) and potassium sulfate (K2SO4). It begins by balancing the molecular equation and determining the solubility of the reactants and products using a solubility table. The tutorial then demonstrates how to write the complete ionic equation by splitting strong electrolytes into their respective ions. Finally, it identifies and removes spectator ions to derive the net ionic equation, which shows the formation of solid barium sulfate as a precipitate.

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

• Balance the molecular equation

• Write the complete ionic equation

• Identify spectator ions

• Determine the solubility of products

Which of the following is true about barium chloride in water?

• It forms a precipitate

• It is insoluble

• It dissolves and dissociates into ions

• It remains as a solid

What does the solubility table indicate about barium sulfate?

• It dissolves partially

• It is insoluble and forms a solid

• It is highly soluble

• It is a strong electrolyte

What is the role of a solubility table in determining the states of substances?

• It predicts the reaction rate

• It measures the pH of solutions

• It identifies the color of substances

• It helps determine if a substance is soluble or insoluble

What is the charge of the sulfate ion in the complete ionic equation?

• 2-

• 1-

• 2+

• 1+

What is the charge of barium in the complete ionic equation?

• 1+

• 2-

• 2+

• 1-

Why don't we split solids into ions in the net ionic equation?

• They are already dissolved

• They are not dissolved and remain as solids

• They are weak electrolytes

• They have no charge

Which ions are considered spectator ions in this reaction?

• Ba2+ and SO4 2-

• K+ and Cl-

• K+ and SO4 2-

• Ba2+ and Cl-

What happens to spectator ions in the net ionic equation?

• They are removed from the equation

• They are included in the final equation

• They change their charge

• They form a new compound

What is the net ionic equation for the reaction between barium chloride and potassium sulfate?

• 2K+ + 2Cl- → 2KCl

• Ba2+ + SO4 2- → BaSO4

• K+ + SO4 2- → K2SO4

• Ba2+ + 2Cl- → BaCl2