CH-401
Separation and purification
Chemistry · Secondary 3 · Easy · Separation and purification
A student wants to obtain pure solid Y from a mixture of Y and Z. The table shows their solubility.
- Y: soluble in water, insoluble in ethanol
- Z: insoluble in water, soluble in ethanol
Which procedure should be used to obtain pure Y?
- Y: soluble in water, insoluble in ethanol
- Z: insoluble in water, soluble in ethanol
Which procedure should be used to obtain pure Y?
- Add ethanol, filter and evaporate the filtrate.
- Add water, filter and evaporate the filtrate.
- Add water, filter and keep the residue.
- Add ethanol, filter and keep the residue.
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