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度為7 153 mmolL1 。解 由于 NaCl 在水溶液中可以電離出2倍質(zhì)點數(shù)目,該溶液的滲透濃度可認為: 所以(1)正確,氯化鈉溶液的滲透濃度應(yīng)為140 mmolL19. 100 g 白蛋白,25 ℃ kPa 求白蛋白的相對分子質(zhì)量。解 10. 測得淚水的凝固點為 ℃,求淚水的滲透濃度及 37 ℃時的滲透壓力。解 淚水的滲透濃度為。, g 尿素(Mr = )溶于200 g 水中, g 某非電解質(zhì)溶于1000 g 水中,這兩種溶液在同一溫度下結(jié)冰,試求該非電解質(zhì)的相對分子質(zhì)量。解 若兩溶液在同一溫度下結(jié)冰,則 ,有 12. mol NaCl, mol mol MgCl2。假如它們在溶液中完全電離,計算該溶液的沸點升高值。解 他們在溶液中完全電離,溶液中總質(zhì)點數(shù)目為: Exercises1. What are the normal freezing points and boiling points of the following solution?(a) NaCl in 135mLof water.(b) of urea in mL of water.Solution: (a) (b) 2. If of a certain nonelectrolyte is dissolved in of benzene, the resulting solution freezes at ℃. Calculate the molecular weight of the nonelectrolyte. Solution: 3. The average osmotic pressure of seawater is about atm at 25℃. Calculate the concentration (molari