SC-821
Evaporation and crystallisation
Lower Sec Science · Secondary 1 · Medium · Evaporation and crystallisation
A student wants to obtain large, pure crystals of copper(II) sulfate from its aqueous solution. Which method is most suitable?
- Heat to form a hot saturated solution, then cool it to allow crystals to form.
- Filter the cold solution and keep the filtrate without further treatment.
- Evaporate all the water to complete dryness over a very strong flame.
- Use chromatography to separate the copper(II) sulfate from the water.
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