SC-657
Filtration
Lower Sec Science · Secondary 1 · Hard · Filtration
A student wants to separate a mixture of sand and copper(II) sulfate crystals dissolved in water. Which separation method should she use to obtain dry copper(II) sulfate crystals from the mixture?
- Filter the mixture, then evaporate the filtrate to crystallise the copper(II) sulfate.
- Use distillation directly on the mixture to obtain copper(II) sulfate crystals.
- Use chromatography to separate the sand from the copper(II) sulfate.
- Filter off the copper(II) sulfate and discard the filtrate.
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