Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between aluminum sulfate and ammonium phosphate. It begins with balancing the molecular equation and determining the states of each substance using solubility rules. The tutorial then demonstrates how to split strong electrolytes into their ions to form the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The tutorial concludes with a balanced net ionic equation, ensuring the net charge is zero.

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

• Balance the molecular equation

• Identify spectator ions

• Determine the net charge

• Write the complete ionic equation

Which of the following compounds is generally soluble?

• Calcium sulfate

• Ammonium phosphate

• Lead chloride

• Aluminum phosphate

What is the state of ammonium phosphate in the reaction?

• Gas

• Aqueous

• Solid

• Liquid

What do you do with strong electrolytes in the complete ionic equation?

• Split them into ions

• Combine them into compounds

• Convert them to gases

• Leave them as molecules

Which ions are not included in the net ionic equation?

• Reactant ions

• Spectator ions

• Precipitate ions

• Product ions

What is the purpose of removing spectator ions?

• To determine solubility

• To balance the equation

• To simplify the equation

• To identify the precipitate

What should the net charge be in a balanced net ionic equation?

• Zero

• Positive

• Negative

• Variable

Why don't we write the number 'one' in the balanced net ionic equation?

• It affects solubility

• It's unnecessary by convention

• It changes the charge

• It complicates the equation

What is the final step in ensuring the net ionic equation is correct?

• Verify the net charge is zero

• Rebalance the molecular equation

• Check for spectator ions

• Rewrite the complete ionic equation

What is the net ionic equation for the reaction between aluminum sulfate and ammonium phosphate?

• Al2(SO4)3 + 2NH4+ → AlPO4 + 2NH4SO4

• 2Al3+ + 3PO4^3- → AlPO4

• Al2(SO4)3 + 3NH4+ → 2AlPO4 + 3NH4SO4

• 2Al3+ + 3PO4^3- → 2AlPO4