試題詳解

15.Assuming that sea water is a 3.5 wt % solution of NaCl in water, calculate its osmotic pressure at 20°C. The density of a 3.5% NaCl solution at 20°C is 1.023 g/mL.
(A) 1.0 atm
(B) 15 atm
(C) 29 atm
(D) 100 atm