Ionic Equations and Spectator Ions

The video tutorial explains how to write and balance the net ionic equation for the reaction between sodium sulfide and zinc nitrate. It begins with balancing the molecular equation, then discusses the solubility and states of the compounds involved. The tutorial proceeds to form the complete ionic equation by splitting strong electrolytes into ions. Finally, it derives the net ionic equation by removing spectator ions, ensuring charge and mass are balanced.

What is the first step in balancing the molecular equation for sodium sulfide and zinc nitrate?

• Determine the solubility of the compounds

• Write the net ionic equation

• Balance the number of nitrates

• Identify spectator ions

Why is sodium nitrate considered soluble in water?

• It forms a precipitate

• It is a strong acid

• Sodium compounds are generally soluble

• It reacts with zinc

What is the state of zinc sulfide in the reaction?

• Solid

• Gas

• Aqueous

• Liquid

Which ions are present in the complete ionic equation for sodium sulfide and zinc nitrate?

• Sodium and nitrate ions

• Zinc and sulfide ions

• Only sodium ions

• Only nitrate ions

What is the charge of the zinc ion in the complete ionic equation?

• 1-

• 2+

• 1+

• 2-

What is the purpose of identifying spectator ions in the ionic equation?

• To identify the precipitate

• To simplify the equation by removing unchanged ions

• To balance the equation

• To determine solubility

Which ions are considered spectator ions in this reaction?

• Only zinc ions

• Zinc and sulfide ions

• Sodium and nitrate ions

• Only sulfide ions

What ensures that the net ionic equation is correctly balanced?

• Equal number of molecules on both sides

• Equal number of atoms on both sides

• Conservation of charge and mass

• Presence of a precipitate

Why might someone prefer to write the positive ion first in the net ionic equation?

• It changes the reaction outcome

• It looks more organized

• It is required for solubility

• It is a rule in chemistry

What is the final product of the net ionic equation for sodium sulfide and zinc nitrate?

• Zinc sulfide

• Sodium nitrate

• Sodium sulfide

• Zinc nitrate