Ionic Compounds and Solubility Concepts

The video tutorial explains the behavior of aluminum sulfate (Al2(SO4)3) when dissolved in water. It describes how this ionic compound dissociates into aluminum ions (Al3+) and sulfate ions (SO4 2-) in an aqueous solution. The tutorial uses a solubility table to confirm the solubility of aluminum sulfate, demonstrating that it breaks apart into its constituent ions. The video concludes with a summary of the dissociation process and the accuracy of the ionic equation representation.

What type of compound is aluminum sulfate?

• Covalent compound

• Ionic compound

• Metallic compound

• Molecular compound

What happens to ionic compounds like aluminum sulfate when they are placed in water?

• They remain unchanged

• They evaporate

• They dissociate into ions

• They form a precipitate

What is the charge on the aluminum ion when aluminum sulfate dissociates?

• 1+

• 4+

• 3+

• 2+

How many sulfate ions are produced from one formula unit of aluminum sulfate?

• One

• Four

• Two

• Three

What does the 'aq' symbol indicate in a chemical equation?

• Solid state

• Liquid state

• Aqueous solution

• Gaseous state

Why is it important to check a solubility table when dissolving compounds?

• To determine the color change

• To confirm if the compound is soluble

• To calculate the pH level

• To measure the temperature change

Where are the positive ions located on a solubility table?

• At the bottom

• Across the top

• Down the left side

• In the center

What does the 's' symbol on a solubility table indicate?

• Slightly soluble

• Soluble

• Saturated

• Solid

What is the final representation of aluminum sulfate in water?

• Aluminum sulfate dissociates into ions

• Aluminum sulfate forms a new compound

• Aluminum sulfate forms a gas

• Aluminum sulfate remains solid

Why is it unnecessary to write water on the product side of the equation?

• Because water evaporates

• Because 'aq' already indicates dissolution in water

• Because water is not involved

• Because water is a reactant