Precipitate Formation

The video tutorial explains the process of diffusion, where ions dissolve and spread in water. An experiment is conducted using potassium iodide and lead nitrate to compare the diffusion rates of lead and iodide ions. The setup involves a Petri dish with water and a cross-marked paper. Observations show that iodide ions diffuse faster than lead ions due to their smaller size, forming a yellow precipitate closer to the lead nitrate. The experiment demonstrates that iodide ions travel approximately three times faster than lead ions.

What happens to salt when it is placed in a bowl of water?

What is the process called when ions spread throughout the water?

What materials are needed to compare the diffusion rates of lead ions and iodide ions?

What observation indicates the formation of yellow lead iodide in the experiment?

What does the distance travelled by the iodide ions indicate about their speed compared to lead ions?

Why do iodide ions diffuse faster than lead ions?

How do the diffusion rates of iodide ions compare to lead ions?