Spectator Ions and Net Ionic Equations

The video tutorial explains how to write a balanced net ionic equation for the reaction between sodium phosphate (Na3PO4) and calcium chloride (CaCl2). It begins with balancing the molecular equation, followed by determining the states of the compounds using solubility rules. The tutorial then proceeds to form the complete ionic equation by splitting strong electrolytes into ions. Finally, it derives the net ionic equation by eliminating spectator ions, resulting in a concise representation of the chemical reaction.

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

• Write the complete ionic equation

• Identify spectator ions

• Balance the molecular equation

• Determine the states of the compounds

Why is it important to know the solubility rules when writing net ionic equations?

• To determine the color of the compounds

• To predict the reaction speed

• To identify the states of the reactants and products

• To calculate the reaction temperature

Which of the following compounds is generally insoluble in water?

• Ammonium sulfate

• Potassium nitrate

• Calcium phosphate

• Sodium chloride

What is the charge of a sodium ion in the complete ionic equation?

• 3-

• 1-

• 1+

• 2+

In the complete ionic equation, how many sodium ions are present?

• Two

• Four

• Six

• Eight

What is the purpose of identifying spectator ions in a reaction?

• To balance the molecular equation

• To simplify the net ionic equation

• To determine the reaction temperature

• To increase the reaction rate

Which ions are considered spectator ions in the reaction between sodium phosphate and calcium chloride?

• Sodium and chloride ions

• Calcium and phosphate ions

• Hydrogen and hydroxide ions

• Ammonium and nitrate ions

What is the final product in the net ionic equation for the reaction between sodium phosphate and calcium chloride?

• Calcium phosphate

• Sodium chloride

• Sodium phosphate

• Calcium chloride

Why are solids not split into ions in net ionic equations?

• They are gases

• They are not reactive

• They do not dissolve in water

• They have no charge

What is the net ionic equation for the reaction between sodium phosphate and calcium chloride?

• Na^+ + Cl^- → NaCl

• 3Ca^2+ + 2PO4^3- → Ca3(PO4)2

• Ca^2+ + 2Cl^- → CaCl2

• Na3PO4 + CaCl2 → NaCl + Ca3(PO4)2