Preparation of Insoluble Salts: Using Solubility Rules and Filtration.

The video tutorial explains how to predict the solubility of salts using solubility rules and demonstrates the preparation of a pure, dry sample of lead sulfate. It covers the five key solubility rules, the process of mixing solutions to form an insoluble precipitate, and the steps to filter, rinse, and dry the precipitate to obtain a pure sample.

Which of the following salts is always soluble in water?

• Calcium carbonate

• Silver chloride

• Lead sulfate

• Sodium chloride

What is the exception to the solubility of most chloride salts?

• Chlorides of silver

• Chlorides of potassium

• Chlorides of ammonium

• Chlorides of sodium

When mixing lead nitrate and sodium sulfate, what type of compound is formed?

• A liquid solution

• An insoluble precipitate

• A gaseous compound

• A soluble salt

What is the first step in preparing a pure dry sample of lead sulfate?

• Drying the precipitate

• Rinsing the beaker

• Mixing the solutions

• Filtering the mixture

Why is it important to rinse the precipitate with distilled water?

• To change the color

• To dissolve the precipitate

• To remove impurities

• To increase the yield