Solubility and purification of water

Solubility curves
1. Different amounts of substances can dissolve in a solvent, e.g water at different temperatures
2. The effect is shown on a solubility graph/curve
Desalination of water
1. Humans cannot drink sea water, there is technology for desalination of water, but there are problems with this on a large scale across the world
2. It uses more energy than the other process
3. It is a very expensive process, many countries that have the most need for water are poor and cannot afford desalination
4. The process produces greenhouse gases, while other treatment plants produce very little
5. The salty water left after fresh water has been extracted is a pollutant
6. Countries with no coastline would have to pump the water across large distances
Distillation

Resource summary

	Created by danielberthaur over 10 years ago