Two solid salts are put in the opposite sides of the Petri dish, and a yellow front arises in the solution
name: Due to the diffusion of lead cations and iodide anions in the liquid, yellow precipitate of lead iodide is formed when ions react
Wear eye protection
Lead nitrate and potassium iodide are toxic.
Avoid contact of lead nitrate with the skin.
Always follow general safety
recommendations. Please note that conducting chemistry
experiments you must comply with the relevant legal procedures in
When lead nitrate and potassium iodide dissolve in water, ions produced by them diffuse in the liquid.
Yellow precipitate of lead iodide is formed, when lead cations and iodide anions meet together.