[化學] 91年台大普化(C)--關於依數性質

看板TransBioChem作者bslh ( 想念高雄的太陽)時間17年前 (2008/07/07 09:08)推噓2(2推 0噓 0→)

留言2則, 2人參與討論串1/1

第17題 two aqueous solution are prepared:2.0m Cu(NO3)2 2.0m NaBr which statement is true? (A) Cu(NO3)2 solution has higher vapor pressure and lower freezing point than NaBr solution (B) Cu(NO3)2 solution has higher vapor pressure and higher freezing point than NaBr solution (C) Cu(NO3)2 solution has lower vapor pressure and lower freezing point than NaBr solution (D) Cu(NO3)2 solution has lower vapor pressure and higher freezing point than NaBr solution 依照熔點下降的公式來看，可以確定B D是錯的那A C要怎麼判斷才好? 蒸氣壓下降，是只要照著公式 △P= i x (純溶劑的蒸氣壓) x (溶質的莫耳分率) 考量嘛? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 118.168.177.200

推

siccreater

07/07 09:43, , 1^F

07/07 09:43, 1^F

推

vivaonly

07/07 11:12, , 2^F

07/07 11:12, 2^F

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