Ionic Charges and Net Ionic Equations

This video tutorial explains how to write a balanced net ionic equation for the reaction between potassium hydroxide (KOH) and copper(II) nitrate (Cu(NO3)2). It begins with balancing the molecular equation, assigning states to each substance, and then splitting strong electrolytes into their respective ions. The tutorial proceeds to form the complete ionic equation and identifies spectator ions to derive the net ionic equation. The video concludes by verifying the net ionic equation, ensuring charge balance and neutrality.

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

• Identify spectator ions

• Write the net ionic equation

• Balance the molecular equation

• Determine the states of substances

Which of the following is a strong base that dissociates completely in water?

• Copper(II) hydroxide

• Potassium nitrate

• Potassium hydroxide

• Copper(II) nitrate

What is the state of copper(II) nitrate in the reaction?

• Aqueous

• Gas

• Liquid

• Solid

How do you determine the charge of the copper ion in copper(II) nitrate?

• By looking at the periodic table

• By the number of nitrate ions present

• By the solubility rules

• By the color of the compound

What is the charge of the hydroxide ion?

• 2-

• 2+

• 1+

• 1-

What do you call ions that appear on both sides of the complete ionic equation?

• Spectator ions

• Neutral ions

• Product ions

• Reactant ions

Which ions are crossed out when forming the net ionic equation?

• Product ions

• Spectator ions

• Only reactant ions

• All ions

What is the final product formed in the net ionic equation?

• Copper(II) nitrate

• Copper(II) hydroxide

• Potassium hydroxide

• Potassium nitrate

Why is it important to ensure charge neutrality in the net ionic equation?

• To ensure the reaction occurs

• To balance the equation

• To identify spectator ions

• To maintain electrical neutrality

What is the charge of the copper ion in the net ionic equation?

• 1+

• 2-

• 2+

• 1-