Spectator Ions and Weak Acids

The video tutorial explains how to write the net ionic equation for the reaction between acetic acid (CH3COOH) and barium hydroxide (Ba(OH)2). It begins with an introduction to the reactants and proceeds to balance the molecular equation. The tutorial then discusses the states of matter and the nature of electrolytes, distinguishing between strong and weak electrolytes. The complete ionic equation is formed by splitting strong electrolytes into ions, and spectator ions are identified and removed to derive the net ionic equation. The video concludes with a simplification of the net ionic equation.

What is the first step in writing the net ionic equation for the reaction between CH3COOH and Ba(OH)2?

• Identify the spectator ions

• Balance the molecular equation

• Write the complete ionic equation

• Determine the states of the reactants

Why is acetic acid considered a weak acid in this reaction?

• It only partially dissociates in water

• It does not dissolve in water

• It completely dissociates in water

• It is a strong electrolyte

Which of the following is a strong electrolyte in the reaction?

• Ba(OH)2

• Acetate ion

• CH3COOH

• Water

What is the charge on the barium ion in the complete ionic equation?

• 2-

• 1-

• 2+

• 1+

Which ion is not split in the complete ionic equation?

• Acetate ion

• Acetic acid

• Hydroxide ion

• Barium ion

What are spectator ions in a chemical reaction?

• Ions that are only in the products

• Ions that form a precipitate

• Ions that do not change during the reaction

• Ions that participate in the reaction

Which ion is removed as a spectator ion in this reaction?

• Acetate ion

• Hydroxide ion

• Barium ion

• Water

What is the purpose of simplifying the net ionic equation?

• To increase the number of ions

• To add more spectator ions

• To reduce coefficients for clarity

• To make the equation more complex

What happens to the coefficients in the final net ionic equation?

• They are reduced to one

• They are doubled

• They are eliminated

• They remain unchanged

What is the final product of the reaction between CH3COOH and Ba(OH)2?

• Acetate ion and hydroxide ion

• Barium hydroxide and water

• Acetic acid and barium hydroxide

• Barium acetate and water