Net Ionic Equations and Spectator Ions

The video tutorial guides viewers through writing a balanced net ionic equation for the reaction between ammonium hydroxide (NH4OH) and sulfuric acid (H2SO4). 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 explains how to identify and remove spectator ions to derive the net ionic equation. Finally, it demonstrates simplifying the equation by reducing coefficients and ensuring charge and atom balance.

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

• Balance the molecular equation

• Identify spectator ions

• Write the complete ionic equation

• Determine the solubility of compounds

Why is it necessary to balance the molecular equation first?

• To identify spectator ions

• To ensure the reaction is feasible

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

• To determine the states of substances

What state is assigned to ammonium compounds in the reaction?

• Liquid

• Gas

• Solid

• Aqueous

What is the charge of the ammonium ion (NH4) in the complete ionic equation?

• 2+

• 2-

• 1+

• 1-

Which ion is not split in the net ionic equation?

• Ammonium ion

• Water

• Sulfate ion

• Hydroxide ion

What are spectator ions?

• Ions that participate in the reaction

• Ions that do not change during the reaction

• Ions that are insoluble

• Ions that are gases

What remains after removing spectator ions from the complete ionic equation?

• Balanced equation

• Molecular equation

• Net ionic equation

• Unbalanced equation

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

• By adding them

• By multiplying them

• By subtracting them

• By dividing them by the greatest common factor

What ensures that the net ionic equation is balanced?

• Equal number of ions

• Equal number of compounds

• Equal number of atoms and charges

• Equal number of molecules

What is the final check to confirm the net ionic equation is correct?

• Check for spectator ions

• Check for solubility

• Check for balanced charges and atoms

• Check for molecular weight