Net Ionic Equations and Solubility

The video tutorial explains how to write a balanced net ionic equation for the reaction between lithium sulfide (Li2S) and barium chloride (BaCl2). It begins by balancing the molecular equation, then assigns states to each compound, identifying which are soluble and which form precipitates. The tutorial proceeds to split strong electrolytes into ions for the complete ionic equation, and finally derives the net ionic equation by removing spectator ions, ensuring both charge and atom balance.

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

• Write the complete ionic equation

• Balance the molecular equation

• Determine the solubility of compounds

• Identify spectator ions

Why is lithium sulfide considered soluble?

• It is a group 2 element

• It forms a precipitate

• It is a group 1 element

• It is a transition metal

Which of the following compounds is generally insoluble?

• Lithium chloride

• Barium sulfide

• Sodium chloride

• Potassium sulfide

What happens to strong electrolytes in a complete ionic equation?

• They evaporate

• They form a solid

• They are split into ions

• They remain intact

What are spectator ions?

• Ions that form a precipitate

• Ions that are insoluble

• Ions that do not change during the reaction

• Ions that participate in the reaction

Which ions are crossed out in the net ionic equation?

• Ions that are soluble

• Ions that are insoluble

• Spectator ions

• Ions that form a solid

What must be balanced in a net ionic equation?

• Neither atoms nor charges

• Both atoms and charges

• Only the charges

• Only the atoms

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

• Positive

• Negative

• Depends on the reaction

• Zero

What is the charge of barium sulfide in the net ionic equation?

• Depends on the reaction

• Zero

• Negative

• Positive

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

• Ensuring charge and atom balance

• Determining solubility

• Identifying spectator ions

• Balancing the molecular equation