Question

Purification of seawater through reverse osmosis is seen as an important solution to issues of drought in arid parts of the world. Seawater has a typical osmotic pressure of 27 bar and an average surface temperature of 17°C. If we assume that seawater is composed solely of NaCl (which, in truth, makes up the vast majority of the ions in seawater), what is the molarity of NaCl in the seawater? (1 atm = 1.01325 bar)

Answer 1