Net Ionic Equations and Reactions

The video tutorial explains how to write and balance the net ionic equation for the reaction between perchloric acid (HClO4) and copper(II) hydroxide (Cu(OH)2). It begins by balancing the molecular equation, then assigns states to each substance, and proceeds to write the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation, ensuring charge and atom balance. The tutorial concludes with a review of the balanced net ionic equation.

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

• Balance the molecular equation

• Identify the spectator ions

• Write the complete ionic equation

• Assign states to each substance

How many perchlorate ions are needed to balance the molecular equation for the reaction between HClO4 and Cu(OH)2?

• Three

• Two

• Four

• One

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

• Liquid

• Solid

• Gas

• Aqueous

Which of the following substances is considered a strong acid and dissociates completely in the reaction?

• Copper(II) hydroxide

• Copper(II) perchlorate

• Perchloric acid

• Water

What is the purpose of writing a complete ionic equation?

• To split strong electrolytes into their ions

• To determine the solubility of the reactants

• To balance the charges in the reaction

• To identify the products of the reaction

Which ions are considered spectator ions in the reaction between HClO4 and Cu(OH)2?

• Hydrogen ions

• Hydroxide ions

• Copper ions

• Perchlorate ions

What is the net ionic equation used for?

• To show only the ions that participate in the reaction

• To list all reactants and products

• To balance the molecular equation

• To determine the reaction rate

How is charge conservation ensured in the net ionic equation?

• By adjusting the coefficients

• By ensuring equal charges on both sides

• By balancing the number of atoms

• By removing spectator ions

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

• Neutral

• 1+

• 2+

• 3+

What is the final step in deriving the net ionic equation?

• Balancing the molecular equation

• Assigning states to substances

• Crossing out spectator ions

• Writing the complete ionic equation