Purification of Water
The process of distillation involves the evaporation and condensation of the
water molecules. The usual apparatus for the distillation of any liquid is shown in
Figure 26.
This method of purification will remove any substance that has a boiling
point higher than that of water. It cannot remove dissolved gases or liquids that
boil off before water. These substances will be carried over into the condenser
and subsequently into the distillate.
Figure 26. Distillation of WaterTIP
In distillation, first boil and then condense.TIP
Water ratios of combination:
H 2 to O 2
2 vol : 1 vol in gaseous state
1 g : 8 g by mass