Net Ionic Equations and Spectator Ions

This video tutorial guides viewers through writing a balanced net ionic equation for the reaction between chromium-3 nitrate and potassium phosphate. It begins with balancing the molecular equation, followed by determining the solubility and states of the substances involved. The tutorial then explains how to split strong electrolytes into ions to form the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The video concludes by ensuring charge conservation and verifying the neutrality of the final compound.

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

• Balance the molecular equation

• Identify spectator ions

• Write the complete ionic equation

• Determine the solubility of compounds

Which of the following is generally soluble according to solubility rules?

• Potassium phosphate

• Chromium phosphate

• Lead sulfate

• Silver chloride

What happens to chromium phosphate in the reaction?

• It forms a precipitate

• It reacts with potassium ions

• It remains as a gas

• It dissolves in water

What is the charge on the chromium ion in chromium-3 nitrate?

• 4+

• 1+

• 2+

• 3+

In the complete ionic equation, which ions are not split apart?

• Liquid compounds

• Gaseous compounds

• Solid compounds

• Aqueous ions

Which of the following is a transition metal in the reaction?

• Chromium

• Nitrate

• Potassium

• Phosphate

What is the role of spectator ions in a chemical reaction?

• They participate in the reaction

• They change the state of the reaction

• They remain unchanged and do not participate

• They form the precipitate

Which ions are removed to form the net ionic equation?

• All ions

• Only cations

• Only anions

• Spectator ions

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

• Positive

• Negative

• Zero

• Depends on the reaction

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

• To make the equation easier to read

• To satisfy the law of conservation of mass

• To ensure the reaction is spontaneous

• To satisfy the law of conservation of charge