Solubility and Ionic Charges of Compounds

The video tutorial explores the solubility of lead(II) sulfate (PbSO4) in water, concluding that it is insoluble. It explains this through solubility tables and charts, highlighting that most sulfates are soluble except for a few, including lead sulfate. The video also clarifies that while a tiny amount of lead(II) sulfate may dissolve, it is considered insoluble. Additionally, it suggests a practical experiment to observe this property.

What is the solubility status of lead(II) sulfate in water?

• Partially soluble

• Insoluble

• Soluble

• Highly soluble

Which of the following is an exception to the general solubility of sulfates?

• Lead(II) sulfate

• Magnesium sulfate

• Calcium sulfate

• Sodium sulfate

What does the 'i' indicate on a solubility chart for lead(II) sulfate?

• It is partially soluble

• It is highly soluble

• It is soluble

• It is insoluble

Which of the following ions is found at the bottom of the solubility chart?

• Chloride ion

• Carbonate ion

• Sulfate ion

• Nitrate ion

What is the ionic charge of the sulfate ion?

• 1-

• 2-

• 1+

• 2+

What is the ionic charge of lead in lead(II) sulfate?

• 2+

• 1+

• 3+

• 4+

Why is lead(II) sulfate considered insoluble despite a small amount dissolving?

• Because it dissolves completely

• Because it forms a precipitate

• Because it reacts with water

• Because the dissolved amount is negligible

What is the significance of the 2+ charge in lead(II) sulfate?

• It affects the color of the compound

• It indicates the number of lead atoms

• It determines the solubility

• It shows the oxidation state of lead

What practical method can be used to test the solubility of lead(II) sulfate?

• Mixing it with acid

• Exposing it to sunlight

• Heating it

• Placing it in water