Net Ionic Equations and Spectator Ions

The video tutorial explains how to write the net ionic equation for the reaction between calcium nitrate and sodium oxalate. It begins with balancing the molecular equation, then determining the states of each substance. The tutorial proceeds to split strong electrolytes into ions to form the complete ionic equation. Finally, it identifies and removes spectator ions to derive the net ionic equation, highlighting the formation of solid calcium oxalate.

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

• Balance the molecular equation

• Identify spectator ions

• Write the complete ionic equation

• Determine the solubility of compounds

Why is calcium nitrate considered aqueous in the reaction?

• It reacts with water to form a gas

• Nitrates are generally soluble

• Nitrates are generally insoluble

• It is a solid at room temperature

Which of the following compounds is considered insoluble in the reaction?

• Calcium nitrate

• Calcium oxalate

• Sodium oxalate

• Sodium nitrate

What is the charge of the calcium ion in the complete ionic equation?

• 2-

• 1-

• 1+

• 2+

In the complete ionic equation, which ion is paired with a 2- charge?

• Nitrate ion

• Sodium ion

• Oxalate ion

• Calcium ion

What are spectator ions in a chemical reaction?

• Ions that participate in the reaction

• Ions that do not change during the reaction

• Ions that form a precipitate

• Ions that are only in the products

Which ions are crossed out to form the net ionic equation?

• Ions that form a solid

• Ions that appear on both sides of the equation

• Ions that are only in the reactants

• Ions that are only in the products

What is the final product in the net ionic equation for this reaction?

• Sodium oxalate

• Calcium oxalate

• Sodium nitrate

• Calcium nitrate

What is the purpose of writing the states in the net ionic equation?

• To indicate the color of the compounds

• To determine the temperature of the reaction

• To show the physical state of the compounds

• To identify the reactants and products

Who is the presenter of the video tutorial?

• Dr. D

• Dr. B

• Dr. A

• Dr. C