Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between perchloric acid (HClO4) and barium hydroxide (Ba(OH)2). It begins by balancing the molecular equation, then determines the states of each substance, identifying them as strong electrolytes. The tutorial proceeds to split these electrolytes into ions to form the complete ionic equation. Finally, it derives the net ionic equation by removing spectator ions and confirms the conservation of mass and charge.

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

• Balance the molecular equation

• Identify spectator ions

• Split strong electrolytes into ions

• Determine the states of substances

Which of the following is a strong acid that dissociates completely in water?

• NaCl

• Ba(OH)2

• H2O

• HClO4

What is the state of barium hydroxide in the reaction?

• Gas

• Liquid

• Solid

• Aqueous

What is the charge on the barium ion in the complete ionic equation?

• 2-

• 1+

• 2+

• 1-

Which ion is not split in the net ionic equation?

• H2O

• ClO4-

• H+

• Ba2+

What is the purpose of identifying spectator ions?

• To balance the equation

• To simplify the net ionic equation

• To determine the states of substances

• To calculate the reaction rate

Which of the following is a spectator ion in the reaction?

• H+

• Ba2+

• ClO4-

• OH-

How can the coefficients in the net ionic equation be simplified?

• By dividing all by 2

• By multiplying all by 2

• By subtracting 1 from each

• By adding 1 to each

What is conserved in a balanced net ionic equation?

• Neither mass nor charge

• Only mass

• Only charge

• Both mass and charge

What is the final product of the reaction between perchloric acid and barium hydroxide?

• BaCl2

• H2O

• Ba(ClO4)2

• HCl