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基礎(chǔ)化學(xué)答案第02-在線瀏覽

2024-08-08 00:58本頁面
  

【正文】 1,水的Kf = Kmol1)⑴ molL1乙二醇的水溶液;⑶ molL1氯化鈉水溶液。L1; ⑵ ;⑶ ; ⑷ c(NaCl)= mol解 根據(jù)非電解質(zhì)溶液, 電解質(zhì)溶液,滲透壓大小順序是:⑷ > ⑵ > ⑶ > ⑴8. 今有一氯化鈉溶液,測(cè)得凝固點(diǎn)為 ℃,下列說法哪個(gè)正確,為什么? ⑴ 此溶液的滲透濃度為140 mmolL1;⑶ 此溶液的滲透濃度為70 mmolL1 。L19. 100 g 白蛋白,25 ℃ kPa 求白蛋白的相對(duì)分子質(zhì)量。解 淚水的滲透濃度為。解 若兩溶液在同一溫度下結(jié)冰,則 ,有 12. mol NaCl, mol mol MgCl2。解 他們?cè)谌芤褐型耆婋x,溶液中總質(zhì)點(diǎn)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 (molarit
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