Actually, what I did was used 107kJ/mol a different source so I have 107.
事实上,我使用了另一个路径,计算得到了。
Now remember, we went through before how it's a state function but to calculate it, you'd need to find a reversible path, along which you can figure this out.
请记住,我们不需要知道它是怎样的一个态函数,只计算就可以了,你需要找到一条可逆路径,沿着这条路径就能算得这个结果。
I'm going from V2 to V2 dv - what do you think this integral is? Right, W1 so this is easy part, zero here.
这样才保证了过程的可逆性,下面来计算,路径1的功。
So if I worry about energy I have a pretty good chance of extracting out these heat capacities, right, and I don't have to worry about exactly which path and I can really mix things up.
而能量与热容有密切的关系,从能量就可以就算出这两个热容,我不需要考虑到底是哪一条路径,可以随意计算。
I take V1 to V2 first, keeping the pressure constant at p1, then I take p1 to p2 keeping the volume constant V2 at V2. Let's call this path 1.
容易计算的路径,第一条路径,是首先保持压强不变,体积从V1压缩到。
So any point I pick on that path will be equal to p1, V1 to the gamma.
也就是说路径上面任取一个点,计算p,V^γ
If you want to calculate a change in delta u.
我们计算Δu的路径。
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