CH 202 Worksheet Exercises Week 8 1.
Desalination is a process by which salts are removed from seawater.
Three major ways to accomplish desalination are distillation, freezing, and reverse osmosis. The freezing method is based upon the fact that when an aqueous solution freezes, the solid that separates from the solution is almost pure water. The reverse osmosis uses water movement from a more concentrated solution to a less concentrated one through a semipermeable membrane. With reference to Chang's Fig. 12.9, draw a diagram showing how reverse osmosis can be carried out. Treat seawater as an 0.70 M NaCl solution.