Net Ionic Equations and Spectator Ions

This video tutorial guides viewers through writing a balanced net ionic equation for the reaction between potassium phosphate (K3PO4) and copper(II) nitrate (Cu(NO3)2). It begins with balancing the molecular equation, determining the solubility of compounds, and identifying the states of each substance. 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 balancing of atoms, providing a clear understanding of the process.

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

• Identify spectator ions

• Balance the molecular equation

• Write the net ionic equation directly

• Determine the solubility of compounds

How many copper atoms are needed to balance the equation for the reaction between potassium phosphate and copper(II) nitrate?

• One

• Two

• Four

• Three

Which of the following compounds is generally soluble?

• Silver chloride

• Lead(II) sulfate

• Potassium phosphate

• Copper(II) phosphate

What is the state of copper(II) phosphate in the reaction?

• Aqueous

• Gas

• Liquid

• Solid

What is the charge of the phosphate ion?

• 1-

• 2-

• 4-

• 3-

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

• Eight

• Four

• Two

• Six

What is the role of spectator ions in a net ionic equation?

• They participate in the reaction

• They are removed from the equation

• They form a precipitate

• They change the charge balance

Which ions are considered spectator ions in this reaction?

• Copper ions

• Potassium ions

• Hydrogen ions

• Phosphate ions

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

• Variable

• Positive

• Negative

• Zero

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

• To make the equation look nicer

• To ensure the reaction is possible

• To identify spectator ions

• To determine solubility