Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between cobalt(II) iodide and lead(II) nitrate. It begins with balancing the molecular equation and determining the states of each substance. The tutorial then demonstrates how to split strong electrolytes into ions to form the complete ionic equation, while keeping solids intact. Spectator ions are identified and crossed out to derive the net ionic equation. The video concludes by ensuring that the charges and atoms are balanced in the final net ionic equation.

What is the first step in balancing net ionic equations?

• Write the net ionic equation

• Balance the molecular equation

• Determine the solubility of compounds

• Identify spectator ions

Which of the following compounds is generally soluble?

• Cobalt(II) nitrate

• Lead(II) nitrate

• Cobalt(II) iodide

• Lead(II) iodide

What happens to lead(II) iodide in the reaction?

• It remains as ions

• It reacts with nitrate ions

• It forms a precipitate

• It dissolves in water

What is the purpose of splitting strong electrolytes into ions?

• To balance the equation

• To identify spectator ions

• To determine solubility

• To write the complete ionic equation

Why are solids not split into ions in the complete ionic equation?

• They do not dissolve

• They are not reactive

• They are spectator ions

• They are already balanced

What are spectator ions?

• Ions that do not change during the reaction

• Ions that form a precipitate

• Ions that participate in the reaction

• Ions that are insoluble

Which ions are crossed out to find the net ionic equation?

• Only anions

• Only cations

• Spectator ions

• All ions

What must be conserved in a net ionic equation?

• Mass only

• Neither mass nor charge

• Both mass and charge

• Charge only

What is the net charge of the products in the net ionic equation?

• Depends on the reactants

• Positive

• Zero

• Negative

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

• Writing the molecular equation

• Ensuring charge balance

• Identifying spectator ions

• Balancing atoms