作者tbuabsas (為誠不破)
看板TransBioChem
標題Re: [化學]求沸點~
時間Fri Jun 20 03:35:45 2008
※ 引述《chat543 (小ㄐ)》之銘言：
: at what temperature is the following process spontaneous at 1atm
: Br(l)→Br(g)
題目是不是應該改成: Br2(l)→Br2(g)
: -1 -1
: where ΔH=31.0 KJ/mol and ΔS=93.0 JK / mol
: what is the normal boiling point of liquid Br2 ?
spontaneous => ΔG < 0
=> ΔG = ΔH-TΔS <0
-1 -1
=> T > ΔH/ΔS = 31000 (J/mol) / 93.0 ( JK / mol )
=> T > 333 K
at boiling point ΔG = 0 =ΔH-TΔS
=> T = 333 K
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◆ From: 140.112.243.174
※ 編輯: tbuabsas 來自: 140.112.243.174 (06/20 03:38)
1F：推 chat543:題目打錯了^^"~~謝謝幫解!! 06/20 12:14