Spectator Ions and Net Ionic Equations

The video tutorial explains how to write a balanced net ionic equation for the reaction between potassium phosphate and lead(II) nitrate. It begins with balancing the molecular equation, then discusses the solubility of compounds to determine their states. The tutorial proceeds to form the complete ionic equation by splitting strong electrolytes into ions. Spectator ions are identified and removed to derive the net ionic equation. The video concludes by ensuring the charge balance and discussing the arrangement of ions in the equation.

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

• Identify spectator ions

• Write the complete ionic equation

• Balance the molecular equation

• Determine the solubility of compounds

Why is lead(II) phosphate considered a solid in the reaction?

• It is a strong electrolyte

• It is insoluble in water

• It is a liquid under standard conditions

• It is a gas at room temperature

Which of the following compounds is generally soluble?

• Potassium phosphate

• Calcium phosphate

• Iron(III) phosphate

• Lead(II) phosphate

What is the charge of the phosphate ion?

• 4-

• 3-

• 2-

• 1-

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

• 6

• 4

• 8

• 2

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

• They participate in the reaction

• They remain unchanged and do not participate

• They alter the charge balance

• They change the state of the reaction

Which ions are considered spectator ions in this reaction?

• Lead ions

• Hydrogen ions

• Phosphate ions

• Potassium and nitrate ions

What is the net charge on the reactant side of the net ionic equation?

• 6-

• 6+

• 2+

• 0

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

• To ensure the reaction is spontaneous

• To increase the reaction rate

• To maintain electrical neutrality

• To decrease the reaction temperature

In a balanced net ionic equation, which ion is typically written first?

• Negative ion

• It doesn't matter

• Positive ion

• Neutral molecule