Net Ionic Equations and Reactions

This video tutorial explains how to write a balanced net ionic equation for the reaction between aluminum hydroxide (AlOH3) and hydrobromic acid (HBr). It begins with balancing the molecular equation, assigning states to each substance, and then forming the complete ionic equation by splitting strong electrolytes into ions. The tutorial proceeds to derive the net ionic equation by removing spectator ions and concludes with a check for charge conservation and atom balance.

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

• Identify spectator ions

• Balance the molecular equation

• Determine the states of substances

• Write the complete ionic equation

Which of the following is generally considered insoluble in water?

• Hydrobromic acid

• Aluminum hydroxide

• Group 1 hydroxides

• Bromide salts

What state is assigned to hydrobromic acid in the reaction?

• Gas

• Aqueous

• Solid

• Liquid

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

• 1+

• 2+

• 3+

• 4+

Why can't aluminum hydroxide be split into ions in the complete ionic equation?

• It is a solid

• It is a liquid

• It is a gas

• It is a strong electrolyte

Which ions are considered spectator ions in this reaction?

• Bromide ions

• Hydroxide ions

• Aluminum ions

• Hydrogen ions

What is the net ionic equation for the reaction between aluminum hydroxide and hydrobromic acid?

• Al(OH)3 + 3Br- → AlBr3 + 3OH-

• 3H+ + 3OH- → 3H2O

• Al3+ + 3Br- → AlBr3

• Al(OH)3 + 3H+ → Al3+ + 3H2O

What is conserved in a balanced net ionic equation?

• Neither mass nor charge

• Only mass

• Both mass and charge

• Only charge

How many water molecules are formed in the net ionic equation?

• 3

• 2

• 1

• 4

What is the total charge on the reactant side of the net ionic equation?

• 0

• 3+

• 1+

• 2+