Net Ionic Equations and Spectator Ions

The video tutorial explains how to write the net ionic equation for the reaction between cobalt(II) chloride and sodium carbonate. It begins by balancing the molecular equation, then assigns states to each substance based on solubility rules. The tutorial proceeds to split strong electrolytes into ions to form the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The process is demonstrated step-by-step, ensuring a clear understanding of each stage.

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

• Balance the molecular equation

• Identify spectator ions

• Write the complete ionic equation

• Determine the solubility of compounds

What is the state of cobalt(II) chloride in the reaction?

• Liquid

• Solid

• Gas

• Aqueous

Which of the following compounds is insoluble in water?

• Sodium chloride

• Cobalt carbonate

• Cobalt(II) chloride

• Sodium carbonate

What charge does the carbonate ion carry?

• 1+

• 2+

• 2-

• 1-

Which ions are not split in the net ionic equation?

• Solid precipitates

• Liquid reactants

• Gaseous products

• Aqueous ions

What is the purpose of identifying spectator ions?

• To find the charge of ions

• To balance the equation

• To determine solubility

• To simplify the net ionic equation

Which ions are considered spectator ions in this reaction?

• Cobalt carbonate

• Cobalt ions

• Carbonate ions

• Sodium ions

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

• Balancing the molecular equation

• Identifying spectator ions

• Writing the complete ionic equation

• Removing spectator ions

What is the net ionic equation for the reaction between cobalt(II) chloride and sodium carbonate?

• Co^2+ + CO3^2- → CoCO3

• Co^2+ + 2Cl^- → CoCl2

• Na^+ + CO3^2- → Na2CO3

• Na^+ + Cl^- → NaCl

Why are solids not split into ions in the net ionic equation?

• They do not dissolve in water

• They are not reactive

• They are liquids

• They are gases