Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between chromium-3 chloride and sodium phosphate. It begins with balancing the molecular equation, followed by determining the solubility of the compounds involved. The tutorial then demonstrates how to form the complete ionic equation by splitting strong electrolytes into ions, and identifies spectator ions to be crossed out. Finally, it presents the balanced net ionic equation, ensuring that both charge and atoms are balanced.

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

• Identify spectator ions

• Balance the molecular equation

• Determine the solubility of compounds

• Split compounds into ions

Which of the following is a characteristic of a balanced molecular equation?

• Unequal number of atoms on each side

• Equal number of atoms on each side

• Presence of spectator ions

• Formation of a gas

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

• To determine the color of the solution

• To measure the temperature change

• To identify the precipitate formed

• To calculate the reaction rate

Which of the following compounds is generally insoluble?

• Sodium chloride

• Potassium nitrate

• Chromium phosphate

• Ammonium sulfate

What is the purpose of splitting strong electrolytes into ions?

• To balance the equation

• To form the complete ionic equation

• To identify the precipitate

• To measure the pH

Which ions are considered spectator ions in a reaction?

• Ions that are only in the reactants

• Ions that are only in the products

• Ions that do not change during the reaction

• Ions that form a precipitate

What happens to spectator ions in the net ionic equation?

• They are included in the equation

• They are removed from the equation

• They are highlighted in the equation

• They are doubled in the equation

What is the role of sodium ions in the reaction between chromium-3 chloride and sodium phosphate?

• They form a precipitate

• They increase the reaction rate

• They act as spectator ions

• They change the color of the solution

What must be verified in the final net ionic equation?

• The color of the solution

• The temperature of the reaction

• The balance of charge and atoms

• The speed of the reaction

What is the net charge of a neutral compound in a net ionic equation?

• Positive

• Negative

• Variable

• Zero