作者conway4 (我的空姐女友!!)
看板Chemistry
标题问一题热力学相关的
时间Tue Oct 17 12:19:00 2006
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" ???
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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