Net Ionic Equations and Reactions

The video tutorial explains how to write a balanced net ionic equation for the reaction between cobalt(II) nitrate and sodium phosphate. It begins with balancing the molecular equation, assigning states based on solubility rules, and then splitting strong electrolytes into ions for the complete ionic equation. The tutorial highlights the importance of crossing out spectator ions and correcting errors to achieve the net ionic equation. Finally, it emphasizes checking the balance of atoms and charges to ensure accuracy.

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

• Write the complete ionic equation

• Balance the molecular equation

• Identify spectator ions

• Determine the solubility of compounds

How many sodium atoms are needed to balance the equation?

• Two

• Six

• Eight

• Four

Which of the following compounds is insoluble in the reaction?

• Sodium phosphate

• Cobalt(II) nitrate

• Cobalt(II) phosphate

• Sodium nitrate

What is the charge of the nitrate ion?

• 1-

• 1+

• 2+

• 2-

How many cobalt ions are present in the complete ionic equation?

• Three

• Two

• Four

• One

What is the role of spectator ions in a reaction?

• They participate in the reaction

• They balance the equation

• They form the precipitate

• They do not change during the reaction

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

• Cobalt ions

• Phosphate ions

• Nitrate ions

• Sodium ions

What is the final charge on both sides of the net ionic equation?

• Positive

• Negative

• Varies

• Neutral

Why is it important to check the balance of charges in the net ionic equation?

• To find the precipitate

• To determine solubility

• To identify spectator ions

• To ensure the equation is neutral

What is the final product of the reaction between cobalt(II) nitrate and sodium phosphate?

• Cobalt(II) phosphate

• Sodium phosphate

• Sodium nitrate

• Cobalt(II) nitrate