Re: [化學]求沸點~

[tbuabsas (為誠不破)]

※ 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)
推 chat543:題目打錯了^^"~~謝謝幫解!!