Preparation of Insoluble Salts: Using Solubility Rules and Filtration.

The video provides a detailed explanation of how to prepare a pure dry sample of an insoluble salt, specifically lead sulfate. The speaker first explains the solubility rules that determine whether a salt is soluble or not. Then, he goes through the steps to prepare the sample, starting with mixing the aqueous solutions of lead nitrate and sodium sulfate, filtering off the solid lead sulfate, rinsing the beaker and filter paper, washing the precipitate with distilled water, and finally drying it in an oven or desiccator. The video includes a summary table of the solubility rules and clear visuals demonstrating each step of the process.