Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between potassium bromide (KBr) and lead(II) nitrate (Pb(NO3)2). It begins with balancing the molecular equation, identifying the solubility of compounds, and determining their states. The tutorial then forms the complete ionic equation by splitting strong electrolytes into ions. Spectator ions are removed to derive the net ionic equation. Finally, the video ensures that both charge and mass are conserved in the equation, providing a clear understanding of the chemical reaction process.

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 the spectator ions

Why is it important to check the solubility of lead(II) bromide in this reaction?

• To confirm if it will act as a catalyst

• To check if it will change color

• To determine if it will form a gas

• To see if it will dissolve in water

What is the state of potassium bromide in the reaction?

• Solid

• Liquid

• Gas

• Aqueous

What does the 'ss' notation on a solubility chart indicate?

• Strongly soluble

• Slightly soluble

• Saturated solution

• Solid state

What is the charge of the lead(II) ion in the complete ionic equation?

• 1-

• 2-

• 2+

• 1+

Which of the following ions is considered a spectator ion in this reaction?

• Lead(II) ion

• Bromide ion

• Potassium ion

• Nitrate ion

In the net ionic equation, which compound is not split into ions?

• Potassium nitrate

• Lead(II) bromide

• Potassium bromide

• Lead(II) nitrate

What happens to the spectator ions in the net ionic equation?

• They form a new compound

• They are removed from the equation

• They are included in the final equation

• They change their charge

What is conserved in a balanced net ionic equation?

• Both mass and charge

• Only charge

• Neither mass nor charge

• Only mass

Which ion is typically written first in net ionic equations?

• Negative ion

• It doesn't matter

• Positive ion

• Neutral molecule