Solubility and Electrolyte Properties of PbI2

The video explores whether lead(II) iodide (PbI2) is an electrolyte. It begins by defining electrolytes as substances that dissolve in water to produce ions, enabling the solution to conduct electricity. The solubility of PbI2 is examined using solubility rules, revealing it is largely insoluble. Despite this, the small amount that does dissolve forms ions, making PbI2 a weak electrolyte. The video concludes by explaining that while PbI2 can conduct electricity, it does so very weakly due to its limited solubility.

What is an electrolyte?

• A substance that does not dissolve in water

• A substance that does not conduct electricity

• A substance that dissolves in non-polar solvents

• A substance that dissolves in water and produces ions

How can we determine if lead(II) iodide is soluble in water?

• By checking its color

• By using a solubility table or memorizing solubility rules

• By tasting it

• By measuring its density

What does the solubility table indicate about PbI2?

• It is insoluble

• It is a gas

• It is a liquid

• It is highly soluble

What ions are produced when PbI2 dissolves in water?

• Pb3+ and I-

• Pb+ and I2-

• Pb2+ and I2+

• Pb2+ and I-

What is the charge on the iodide ion?

• 2-

• 1-

• 1+

• 2+

Why is PbI2 considered a weak electrolyte?

• Because it is a gas

• Because it does not dissolve at all

• Because it dissolves completely

• Because it dissolves slightly and produces few ions

What happens to the ions of PbI2 in water?

• They form a solid

• They evaporate

• They conduct electricity weakly

• They become non-conductive

What is the significance of the 'AQ' notation in the context of PbI2?

• It indicates a solid state

• It indicates a gaseous state

• It indicates the ions are dissolved in water

• It indicates a non-conductive state