Net Ionic Equations and Spectator Ions

This video tutorial explains how to write the balanced net ionic equation for the reaction between barium nitrate and potassium chromate. It begins by balancing the molecular equation, then discusses the solubility rules to determine the states of the substances involved. The video proceeds to form the complete ionic equation by splitting strong electrolytes into ions. Finally, it derives the net ionic equation by removing spectator ions, ensuring charge and atom balance. The tutorial concludes with a summary of the balanced equation, emphasizing the conservation of charge and mass.

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

• Determine the solubility of compounds

• Balance the molecular equation

• Write the complete ionic equation

• Identify spectator ions

Why is it important to know solubility rules when writing net ionic equations?

• To identify the state of each substance

• To predict the temperature change

• To calculate the reaction rate

• To determine the color of the compounds

Which of the following compounds is insoluble in water?

• Potassium chromate

• Barium nitrate

• Barium chromate

• Potassium nitrate

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

• 1+

• 2-

• 2+

• 1-

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

• Nitrate ion

• Potassium ion

• Barium chromate

• Chromate ion

What are spectator ions in a chemical reaction?

• Ions that do not change during the reaction

• Ions that change color

• Ions that form a precipitate

• Ions that participate in the reaction

Which ions are removed to form the net ionic equation?

• Only the reactant ions

• All ions

• Spectator ions

• Product ions

What is the net charge of the balanced net ionic equation for barium nitrate and potassium chromate?

• 0

• 2-

• 2+

• 1+

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

• To determine the reaction temperature

• To maintain the law of conservation of charge

• To ensure the reaction is spontaneous

• To predict the color of the solution

What does it mean when a compound is described as 'neutral' in the context of a net ionic equation?

• It has a net charge of zero

• It is a gas

• It has no ions

• It is insoluble