Spectator Ions and Weak Acids

This video tutorial explains how to write a balanced net ionic equation for the reaction between lithium hydroxide (LiOH) and acetic acid (CH3COOH). It covers the steps of balancing the molecular equation, determining the states of substances, splitting strong electrolytes into ions, and forming the net ionic equation by removing spectator ions. The tutorial emphasizes the importance of recognizing weak acids like acetic acid, which do not dissociate into ions in the net ionic equation. The final balanced net ionic equation is verified for both atom and charge balance.

What is the chemical formula for lithium hydroxide?

• LiOH

• LiH

• LiO

• LiHO

Which of the following is a weak acid?

• CH3COOH

• HCl

• H2SO4

• HNO3

What is the state of lithium hydroxide in the reaction?

• Solid

• Liquid

• Gas

• Aqueous

Why do we not split acetic acid into ions in the net ionic equation?

• It is a strong acid

• It is a weak acid

• It is a solid

• It is a gas

Which ion is considered a spectator ion in this reaction?

• Acetate ion

• Lithium ion

• Hydrogen ion

• Hydroxide ion

What is the charge of the acetate ion?

• 1+

• 1-

• 2-

• 2+

What is the final product that remains intact in the net ionic equation?

• Li+

• H2O

• CH3COOH

• LiOH

What ensures the net ionic equation is balanced?

• Equal number of molecules

• Equal number of electrons

• Equal number of atoms

• Equal number of ions

What is the significance of a negative charge in the reactants and products?

• It suggests a gas is formed

• It means the reaction is incomplete

• It shows the reaction is balanced

• It indicates a strong acid

Why is it important to recognize acetic acid as a weak acid in this context?

• To keep it intact in the net ionic equation

• To convert it to a base

• To split it into ions

• To change its state