Net Ionic Equations and Concepts

The video tutorial explains how to write the net ionic equation for the reaction between hydrochloric acid (HCl) and strontium hydroxide (SrOH2). It begins with balancing the molecular equation, assigning states to each compound, and then splitting the strong electrolytes into their respective ions. The complete ionic equation is formed, and spectator ions are identified and crossed out. Finally, the net ionic equation is derived and simplified by reducing coefficients.

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

• Identify spectator ions

• Write the balanced molecular equation

• Determine the states of reactants

• Simplify the equation

What is the purpose of balancing the molecular equation?

• To determine the states of the substances

• To ensure the number of atoms for each element is equal on both sides

• To ensure the equation is simplified

• To identify spectator ions

What state is assigned to hydrochloric acid in the reaction?

• Liquid

• Aqueous

• Solid

• Gas

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

• Chloride ion

• Water

• Strontium hydroxide

• Hydrochloric acid

What is the charge of the hydroxide ion?

• 1+

• 2+

• 2-

• 1-

What do we call ions that appear unchanged on both sides of the equation?

• Product ions

• Net ions

• Reactant ions

• Spectator ions

Which ions are removed to form the net ionic equation?

• Spectator ions

• Net ions

• Product ions

• Reactant ions

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

• HCl + Sr(OH)2 → SrCl2 + H2O

• H2O → H+ + OH-

• 2H+ + 2OH- → 2H2O

• H+ + OH- → H2O

Why do we not write the coefficient '1' in front of compounds in the net ionic equation?

• It is unnecessary by convention

• It complicates the equation

• It is only used for reactants

• It is incorrect

What is the final step in simplifying the net ionic equation?

• Adding more reactants

• Balancing the equation again

• Reducing coefficients to their lowest terms

• Identifying more spectator ions