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 hydroxide. It begins with balancing the molecular equation, followed by determining the states of each substance. The tutorial then demonstrates how to write the complete ionic equation and identify spectator ions to derive the net ionic equation. Finally, it verifies the balance of charge and atoms in the net ionic equation.

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

• Balance the molecular equation

• Write the complete ionic equation

• Identify spectator ions

• Determine solubility

Why do we put a coefficient of 2 in front of sodium nitrate in the molecular equation?

• To balance the sodium ions

• To balance the nitrate ions

• To balance the cobalt ions

• To balance the hydroxide ions

Which of the following compounds is generally insoluble?

• Cobalt(II) hydroxide

• Sodium nitrate

• Sodium hydroxide

• Cobalt(II) nitrate

What happens to cobalt(II) hydroxide in the reaction?

• It forms a solid precipitate

• It forms a gas

• It remains unchanged

• It dissolves completely

What is the purpose of writing a complete ionic equation?

• To determine solubility

• To split strong electrolytes into ions

• To balance the charges

• To identify the precipitate

Which ions are considered spectator ions in this reaction?

• Sodium ions

• Nitrate ions

• Hydroxide ions

• Cobalt ions

What is the role of sodium ions in the reaction?

• They balance the equation

• They react with hydroxide ions

• They are spectator ions

• They form a precipitate

What is the net charge of the final net ionic equation?

• 0

• 2-

• 1+

• 2+

Why is it important to ensure that the net ionic equation is balanced?

• To identify spectator ions

• To conserve charge

• To determine solubility

• To conserve mass

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

• Determining solubility

• Ensuring charge and atom balance

• Identifying spectator ions

• Balancing the molecular equation