Desalination of sea water Flashcards
1
Q
Why do we remove salt from sea water
A
vital for countries that have limited supplies of potable water
2
Q
2 methods of desalination of sea water
A
distillation, reverse osmosis
3
Q
Disadvantages of desalination
A
requires large amounts of energy so energy costs are high
4
Q
Distillation two state changes
A
evaporation and condensation
5
Q
Stages to distillation
A
sea water is boiled, it evaporates, it enters a condenser and is cooled, vapour condenses to form pure water
6
Q
How can you prove your water is pure
A
check its pH, measure its boiling point, evaporate and check for dry residue
