Diffusion in liquids

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An image of a yellow substance dissolving and diffusing in a clear liquid

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Demonstrate that diffusion takes place in liquids in this practical using lead nitrate and potassium iodide. Includes kit list and safety instructions.

In this experiment, students place colourless crystals of lead nitrate and potassium iodide at opposite sides of a Petri dish of deionised water. 

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