作者garytajen (gary)
看板TransBioChem
標題[化學] 一題熱力學求解
時間Tue Apr 26 00:04:31 2016
Ammonium nitrate product-favpredly dissolves in water at room temperature and
the process causes the solition to become quite cold
Which of the following is not true about the dissolution of ammonium nitrate?
(A)the process is exothermic
(B)the solubility will be greater in warm water
(C)delta S for the reaction is negative
(D)all solution of ammonium nitrate are supersaturated
答案是A，我也覺得C也錯耶大家覺得呢
我的想法:Product-favoredly→自發→S>0
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※ 編輯: garytajen (114.136.176.180), 04/27/2016 02:42:39
1F：→ BiGiLa: 你之前是不是化合物打錯04/27 21:49
2F：→ BiGiLa: 自發是delta G<0 定義看清楚就沒問題了04/27 21:50
3F：→ garytajen: 是呀之前字打錯被發現了哈哈04/27 22:42
4F：→ garytajen: delta G=H-TS 答案表示delta S是負的04/27 22:42
5F：→ garytajen: (+)-(+)(-)→delta G如果照答案那是>004/27 22:42
6F：→ BiGiLa: 看到那句就直接否定你真不好意思 原來你有推過04/28 09:25
7F：→ BiGiLa: 我仔細看完 應該是ACD敘述錯 B敘述正確04/28 09:28
※ 編輯: garytajen (114.136.166.60), 04/29/2016 01:26:55
8F：→ begolong: 只有B是對的其他選項都錯 04/29 23:40
9F：→ garytajen: 謝謝BiGiLa和begolong兩位大大~ 04/30 02:44