To obtain salt crystals from a salt solution, the method can be A Decreasing temperature B Increase pressure C Evaporating solvent D Filtering

To obtain salt crystals from a salt solution, the method can be A Decreasing temperature B Increase pressure C Evaporating solvent D Filtering

C. Because the solubility of salt does not change with the temperature, so A error, increase the pressure is more useless, so B error, solution filtration is not crystal, so D error.
There is a saying called summer sun salt, winter fishing alkali, so salt crystals can only rely on evaporation solvent
I look forward to your adoption. Thank you.

Evaporate a cup of unsaturated salt solution at a constant temperature until a large amount of salt crystals are precipitated. The following curve can correctly reflect food The mass fraction of solute of salt varies with the mass m of evaporated water as () Where horizontal is in m and vertical is in%

C