作者frost0727 (郑昌明加油呗!!!)
看板Chemistry
标题Re: 问一题热力学相关的
时间Tue Oct 17 23:50:39 2006
※ 引述《conway4 (我的空姐女友!!)》之铭言：
: a rxn is at equilibrium in a closed rigid vessel at constant T when
: a.ΔS=0
: b.ΔH=0
: c.ΔU=0
: d.ΔG=0
: e.ΔA=0
: the ans is "e" ???
dA= -PdV-SdT
故定温定体积下 ΔA=0 这很基本 课本都有
: another one.......
: in which of the following processes is energytransferred into the
: substance by work(W>0)
: a.expansion of a gas against the surroundings
: b.expansion of a gas into a vacuum
: c.vaporization of one mole of water at 50度c in an open container
: d.melting of 100g of ice on a laboratory benchtop
: e.combustion of methane in a constant-V container
: the ans in this one is "d"
: 这两题我都蛮疑惑的
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