CH-384
Separation and purification
Chemistry · Secondary 3 · Medium · Separation and purification
A mixture contains sand and sodium chloride dissolved in water.
Which sequence of methods will obtain pure dry sodium chloride from the mixture?
Which sequence of methods will obtain pure dry sodium chloride from the mixture?
- Filtration, then distillation of the filtrate
- Filtration, then evaporation to dryness
- Filtration, then crystallisation of the filtrate
- Distillation, then filtration of the residue
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