Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between sodium sulfide and zinc chloride. It begins with balancing the molecular equation, then determining the states of the substances involved. The tutorial proceeds to split strong electrolytes into ions to form the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The final section verifies the balanced net ionic equation, ensuring charge and atom balance.

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

• Write the complete ionic equation

• Identify spectator ions

• Balance the molecular equation

• Determine the solubility of compounds

Why is it important to know the solubility of compounds in a reaction?

• To measure the temperature change

• To calculate the reaction rate

• To identify the precipitate formed

• To determine the color of the solution

Which of the following compounds is insoluble and forms a precipitate in the reaction?

• Sodium sulfide

• Zinc sulfide

• Zinc chloride

• Sodium chloride

What is the charge of the sulfide ion?

• 2-

• 1+

• 2+

• 1-

In the complete ionic equation, which ion is not split into its constituent ions?

• Zinc ion

• Zinc sulfide

• Sodium ion

• Chloride ion

What are spectator ions?

• Ions that participate in the reaction

• Ions that do not change during the reaction

• Ions that are insoluble

• Ions that form a precipitate

Which ions are considered spectator ions in this reaction?

• Sodium and chloride ions

• Zinc and sulfide ions

• Sodium and zinc ions

• Chloride and sulfide ions

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

• Varies depending on the reaction

• Negative

• Zero

• Positive

Why is it important to ensure that atoms are balanced in a net ionic equation?

• To conserve mass

• To ensure the reaction is spontaneous

• To maintain the color of the solution

• To increase the reaction rate

In a net ionic equation, which ion is typically written first?

• The ion with the smallest charge

• The ion with the largest charge

• The negative ion

• The positive ion