Net Ionic Equations and Solubility

The video tutorial explains how to write and balance net ionic equations, using cobalt(III) nitrate and sodium hydroxide as examples. It covers balancing the molecular equation, determining the states of substances, and writing complete and net ionic equations. The tutorial emphasizes the importance of charge conservation and balancing atoms in the final net ionic equation.

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

• Identify spectator ions

• Balance the molecular equation

• Write the complete ionic equation

• Determine the states of substances

How do you balance the number of nitrate ions in the molecular equation?

• Adjust the coefficient of sodium nitrate

• Add more hydroxide ions

• Add more cobalt ions

• Adjust the coefficient of cobalt nitrate

Which of the following is generally soluble?

• Both sodium hydroxide and cobalt(III) nitrate

• Cobalt(III) nitrate

• Sodium hydroxide

• Cobalt(III) hydroxide

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

• It remains as ions in solution

• It forms a precipitate

• It dissolves in water

• It reacts with sodium ions

What is the purpose of writing a complete ionic equation?

• To balance the charges

• To identify spectator ions

• To calculate the reaction yield

• To determine the states of substances

Which ions are considered spectator ions in this reaction?

• Sodium ions

• Nitrate ions

• Hydroxide ions

• Cobalt ions

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

• Varies depending on the reaction

• Positive

• Negative

• Neutral

Why is it important to ensure charge conservation in a net ionic equation?

• To balance the molecular equation

• To ensure the reaction is feasible

• To maintain electrical neutrality

• To identify spectator ions

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

• Writing the complete ionic equation

• Removing spectator ions

• Determining the states of substances

• Balancing the molecular equation

What is the role of Dr. B in the video?

• To discuss solubility rules

• To balance chemical equations

• To explain the concept of net ionic equations

• To demonstrate a chemical reaction