Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a net ionic equation for the reaction between magnesium hydroxide and hydrochloric acid. It begins with balancing the molecular equation, determining the states of the reactants and products using a solubility table, and identifying strong electrolytes to split into ions. The complete ionic equation is formulated, and spectator ions are identified and removed to derive the final net ionic equation. The tutorial emphasizes understanding solubility rules and the process of simplifying chemical equations.

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

• Determine solubility

• Identify spectator ions

• Balance the molecular equation

• Split strong electrolytes

Why is magnesium hydroxide considered a solid in the net ionic equation?

• It is a strong electrolyte

• It is a gas

• It is soluble in water

• It is insoluble in water

What is the state of hydrochloric acid in the reaction?

• Aqueous

• Gas

• Liquid

• Solid

Which ions are produced when hydrochloric acid is split?

• H+ and OH-

• Mg2+ and OH-

• Mg2+ and Cl-

• H+ and Cl-

What is the charge of magnesium ion in the products?

• 1+

• 2+

• 2-

• 1-

What do we call the equation that includes all ions present in the reaction?

• Net ionic equation

• Molecular equation

• Complete ionic equation

• Balanced equation

Which ions are considered spectator ions in this reaction?

• H+

• Mg2+

• Cl-

• OH-

What is the net ionic equation for the reaction between Mg(OH)2 and HCl?

• Mg(OH)2 + 2H+ → Mg2+ + 2H2O

• Mg(OH)2 + 2Cl- → MgCl2 + 2OH-

• Mg2+ + 2Cl- → MgCl2

• H+ + OH- → H2O

What is the state of water in the net ionic equation?

• Aqueous

• Gas

• Liquid

• Solid

What is the final product formed along with magnesium ion in the net ionic equation?

• Hydrochloric acid

• Magnesium hydroxide

• Water

• Chloride ion