Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between calcium nitrate and potassium carbonate. It begins by balancing the molecular equation and discussing solubility rules, particularly for nitrates and carbonates. The tutorial then covers the formation of a precipitate, calcium carbonate, and demonstrates how to split strong electrolytes into ions to form the complete ionic equation. Finally, it shows how to identify and remove spectator ions to derive the net ionic equation, ensuring both atoms and charges are balanced.

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

• Write the complete ionic equation

• Determine the solubility of compounds

• Balance the molecular equation

• Identify spectator ions

Which of the following compounds is generally soluble?

• Potassium carbonate

• Lead sulfate

• Calcium carbonate

• Silver chloride

What is the state of calcium carbonate in the reaction?

• Aqueous

• Gas

• Solid

• Liquid

What is the role of solubility rules in writing net ionic equations?

• To identify spectator ions

• To balance the equation

• To determine the state of compounds

• To determine the charge of ions

What happens to the precipitate in a reaction?

• It remains in solution

• It dissolves in water

• It falls to the bottom

• It evaporates

What do you obtain by splitting strong electrolytes into their ions?

• Molecular equation

• Balanced equation

• Net ionic equation

• Complete ionic equation

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 removed to form the net ionic equation?

• Only anions

• Spectator ions

• Only cations

• All ions

What is the net charge of a balanced net ionic equation?

• Positive

• Negative

• Depends on the reaction

• Zero

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

• To identify spectator ions

• To satisfy the law of conservation of mass

• To make the equation look neat

• To ensure all ions are included