Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between nickel(II) chloride and sodium bromide. It begins by balancing the molecular equation, then discusses the solubility of the compounds involved, indicating that all substances dissolve in water. The tutorial proceeds to split the strong electrolytes into their ions, forming a complete ionic equation. However, upon identifying and crossing out the spectator ions, it is concluded that no net ionic equation exists as no reaction occurs. The video emphasizes that all ions remain unchanged in the solution.

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

• Balance the molecular equation

• Write the complete ionic equation

• Identify spectator ions

• Determine the solubility of compounds

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

• To know which substances dissolve in water

• To determine the color of the solution

• To identify the charge of ions

• To balance the equation

What does 'aq' signify when writing the state of a substance?

• The substance is aqueous and dissolves in water

• The substance is a solid

• The substance is a liquid

• The substance is a gas

What is the charge of a nickel ion in the given reaction?

• 1+

• 2+

• 0

• 3+

How do you determine the charge of the nickel ion in the reaction?

• By the number of chloride ions

• By the solubility rules

• By the color of the solution

• By the periodic table

What are spectator ions?

• Ions that form a precipitate

• Ions that participate in the reaction

• Ions that change state during the reaction

• Ions that remain unchanged on both sides of the equation

Why is there no net ionic equation for the reaction between NiCl2 and NaBr?

• The reaction is not balanced

• The reaction produces a gas

• All ions are spectator ions

• A precipitate forms

What happens to the ions in the reaction between NiCl2 and NaBr?

• They change their charges

• They precipitate out of solution

• They remain in solution as spectator ions

• They form a new compound

What is the final conclusion about the reaction between NiCl2 and NaBr?

• The solution changes color

• A new compound is formed

• No reaction occurs

• A gas is released

What is the role of Dr. B in the video?

• To explain why no net ionic equation exists

• To demonstrate a chemical reaction

• To discuss the periodic table

• To show how to balance equations