Net Ionic Equations and Charge Balance

The video tutorial explains how to write and balance net ionic equations, using aluminum nitrate and lithium carbonate as examples. It begins with balancing the molecular equation, then moves on to balancing the net ionic equation by identifying the states of compounds and splitting strong electrolytes into ions. Spectator ions are identified and removed to derive the net ionic equation. The tutorial concludes by ensuring that both charge and atom balance are maintained in the final equation.

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

• Determine the solubility of compounds

• Write the complete ionic equation

• Identify spectator ions

• Balance the molecular equation

How do you balance the number of aluminum atoms in the molecular equation?

• Add a coefficient of 2 in front of aluminum nitrate

• Add a coefficient of 1 in front of aluminum nitrate

• Add a coefficient of 6 in front of lithium carbonate

• Add a coefficient of 3 in front of aluminum nitrate

Which of the following compounds is generally insoluble?

• Sodium carbonate

• Potassium carbonate

• Lithium carbonate

• Aluminum carbonate

What happens to compounds with nitrate ions in solution?

• They form a precipitate

• They react with water

• They remain as solids

• They dissolve and dissociate into ions

What is the purpose of writing the complete ionic equation?

• To identify the precipitate

• To balance the charges

• To split strong electrolytes into ions

• To determine solubility

Which ions are considered spectator ions in this reaction?

• Aluminum ions

• Hydrogen ions

• Carbonate ions

• Nitrate ions

What is the net ionic equation for the reaction between aluminum nitrate and lithium carbonate?

• Al3+ + 3CO3^2- → Al2(CO3)3

• 3Li+ + 3NO3^- → Li3NO3

• Li2CO3 + 2Al3+ → 2Li+ + Al2(CO3)3

• Al3+ + 3NO3^- → Al(NO3)3

Why do we not split solids in net ionic equations?

• They are already balanced

• They are not involved in the reaction

• They do not dissociate into ions

• They are spectator ions

How is charge balance achieved in the net ionic equation?

• By adding more reactants

• By adjusting the coefficients

• By ensuring the total positive and negative charges are equal

• By removing spectator ions

What is the significance of ensuring atom balance in the net ionic equation?

• To identify spectator ions

• To conserve mass

• To ensure the reaction is feasible

• To predict the products