Edexcel IGCSE Chemistry · Spec 2.42-2.43C
Preparing Pure, Dry Soluble and Insoluble Salts (Paper 2)
Covers finish a soluble-salt preparation correctly, Prepare lead sulfate by precipitation and Explain washing and drying.
Chemistry revision video
Preparing Pure, Dry Soluble and Insoluble Salts (Paper 2)
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Spec 2.42-2.43C
What you need to know
- Finish a soluble-salt preparation correctly
- Prepare lead sulfate by precipitation
- Explain washing and drying
Active recall
Quick check
Answer each question before opening the answer.
Why add an insoluble solid in excess?
To use up all the acid
Name the two solutions used to make lead sulfate
Lead(II) nitrate and sodium sulfate
Why wash a precipitate?
To remove soluble impurities
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