CH-1375
Separation and purification
Chemistry · Secondary 4 · Medium · Separation and purification
A mixture contains solid copper(II) sulfate crystals and sand. Copper(II) sulfate is soluble in water but sand is not.
Which procedure is used to obtain pure dry copper(II) sulfate crystals from the mixture?
Which procedure is used to obtain pure dry copper(II) sulfate crystals from the mixture?
- Filter the mixture and evaporate the residue to dryness.
- Filter the mixture and crystallise the filtrate.
- Distil the mixture and collect the distillate.
- Sublime the mixture and collect the solid that forms on a cold surface.
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