Net Ionic Equations and Spectator Ions

This video tutorial explains how to write a balanced net ionic equation for the reaction between hydrochloric acid (HCl) and ammonium hydroxide (NH4OH). It begins with balancing the molecular equation, then determining the states of each substance. 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. Finally, the video emphasizes the conservation of mass and charge in the reaction.

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

• Split strong electrolytes into ions

• Balance the molecular equation

• Write the states of substances

• Identify spectator ions

Which of the following is true about hydrochloric acid (HCl) in the reaction?

• It forms a precipitate

• It is a weak acid

• It is a strong electrolyte

• It does not dissociate in water

What is the state of NH4OH in the reaction?

• Solid

• Liquid

• Gas

• Aqueous

What is the charge of the hydrogen ion (H+) in the complete ionic equation?

• +1

• -1

• +2

• 0

Which ions are present in the reactants of the complete ionic equation?

• H2O and Cl-

• NH4+ and OH-

• H+ and OH-

• NH4+ and Cl-

What is the role of spectator ions in a chemical reaction?

• They change the state of the reaction

• They form new compounds

• They participate in the reaction

• They remain unchanged and are not part of the net ionic equation

Which ions are considered spectator ions in this reaction?

• Cl- and OH-

• NH4+ and Cl-

• H+ and OH-

• H2O and NH4+

What is the net ionic equation for the reaction between HCl and NH4OH?

• H+ + OH- → H2O

• NH4+ + Cl- → NH4Cl

• HCl + NH4OH → NH4Cl + H2O

• H2O → H+ + OH-

How is charge conserved in the net ionic equation?

• The charges on both sides are equal

• There is no charge conservation

• Only positive charges are conserved

• The charges are different on each side

What is conserved in the final net ionic equation besides charge?

• Pressure

• Mass

• Temperature

• Volume