Preparing an Insoluble Salt
To prepare a pure, dry sample of an insoluble salt
Diagram showing the filtration step to separate the insoluble salt from solution
- Dilute acid, insoluble metal base or carbonate, goggles and lab coat
- Beakers, funnel and filter paper, wash bottle, oven, glass rod
- Dissolve the soluble salts in water and mix together using a stirring rod in a beaker.
- Filter to remove precipitate from mixture.
- Wash filtrate with deionised water to remove traces of other solutions.
- Leave in an oven to dry.
Analysis of results:
- This is a relatively quick and simple way of producing an insoluble salt.
- After drying comment on the shape and appearance of the salt crystals.
- Since the precipitate is insoluble in water any remaining contaminating solution can be removed by washing it with deionised water.