Specification Point 2.41C (Paper 2C Only):
Describe an experiment to prepare a pure, dry sample of an insoluble salt, starting from two soluble reactants
Preparation of Insoluble Salts
Using Two Soluble Reactants:
- An insoluble salt can be made by a precipitation reaction by mixing two soluble salt solutions
- A precipitation reaction is a reaction that produces a precipitate
The filtration of the mixture to remove the precipitate
- Dissolve soluble salts in water and mix together using a stirring rod in a beaker
- Filter to remove precipitate from mixture
- Wash filtrate with water to remove traces of other solutions
- Leave in an oven to dry
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Jamie got a First class degree in Chemistry from Oxford University before going on to teach chemistry full time as a professional tutor. He’s put together these handy revision notes to match the Edexcel IGCSE Chemistry specification so you can learn exactly what you need to know for your exams.
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