Net Ionic Equations and Spectator Ions

The video tutorial explains how to write the net ionic equation for the reaction between zinc chloride and sodium hydroxide. It begins by balancing the molecular equation, then determines the states of the compounds involved. The tutorial proceeds to split strong electrolytes into their respective ions to form the complete ionic equation. Finally, it identifies and crosses out spectator ions to derive the net ionic equation, providing a clear and structured approach to understanding the process.

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

• Determine the solubility of compounds

• Balance the molecular equation

• Identify spectator ions

• Split compounds into ions

What is the solubility state of zinc chloride in water?

• Liquid

• Aqueous

• Gas

• Solid

Which compound forms a precipitate in the reaction between ZnCl2 and NaOH?

• Zinc chloride

• Zinc hydroxide

• Sodium chloride

• Sodium hydroxide

What is the charge of zinc in the ionic equation?

• 3+

• 1+

• 2+

• 0

Which ions are not split in the complete ionic equation?

• Hydroxide ions

• Chloride ions

• Zinc hydroxide

• Sodium ions

What are spectator ions?

• Ions that participate in the reaction

• Ions that are gases

• Ions that do not change during the reaction

• Ions that form a precipitate

Which ions are removed to form the net ionic equation?

• All ions

• Spectator ions

• Hydroxide ions

• Zinc ions

What is the net ionic equation for the reaction between ZnCl2 and NaOH?

• Zn^2+ + 2OH^- → Zn(OH)2

• ZnCl2 + 2NaOH → Zn(OH)2 + 2NaCl

• Zn^2+ + Cl^- → ZnCl2

• Na^+ + Cl^- → NaCl

What is the final state of zinc hydroxide in the net ionic equation?

• Aqueous

• Gas

• Solid

• Liquid

What is the purpose of writing a net ionic equation?

• To balance the molecular equation

• To focus on the ions that participate in the reaction

• To highlight the formation of gases

• To show all compounds in a reaction