所以要把它们，与标准状态化学势。
So we're going to reference this to some standard state chemical potential.
我们需要考虑，混合体的化学势。
Where I'm going to have to worry about the chemical potentials of mixtures.
容器内外的化学势,必须相等。
The chemical potential has to be equal outside and inside the container.
我们先写下，化学势相等的等式。
So let's start by writing the chemical potentials being equal to each other.
我们现在怎么知道，这两边的化学势？
Now, what do we know about the chemical potential in both parts?
减去一点反应物的，化学势。
Subtract a little bit of chemical potential from the reactants.
水的化学势受到，其他成分的强烈影响。
And so the chemical potential of the water is strongly affected by all the other constituents.
所以他的化学势，等于纯物质的化学势。
So it's going to be the chemical potential of the pure material.
结果导致，化学势的降低。
And that's what's resulting in the decrease in chemical potential.
这回改变，物质的化学势。
And that's going to change what the chemical potential of a species is.
此时两边的化学势，相等。
And at that point the chemical potentials of both sides are going to be the same.
这也会改变，参考化学势。
And that would change what the reference potential is chemical potential is.
现在我们有这样一个方程，从化学势开始。
So now we have this equation, where we started out with the chemical potentials.
所以我们要研究化学势。
如果你想知道化学势。
就得到化学势得到，你们很熟悉的这个式子。
And you get the chemical, you get your equation that you know well.
因为里面的化学势低。
都是化学势相等出发。
对的，它只是摩尔数，乘以每种情况的化学势。
Right, it's just a number of moles times the chemical potential in each case.
让我们来看化学势。
然后按照所有，纯净物的标准化学势展开混合。
And then we expand it out in terms of the standard chemical potentials for everything being pure.
化学势是一摩尔物质的吉布斯自由能。
我们考虑化学势。
我们对于气相中的一些成分的，化学势了解很多。
We know a lot about the chemical potential of something in the gas phase.
我们知道吉布斯自由能，等于化学势之和，对吗？
And I know the Gibbs free energy is just the sum of the chemical potentials, right?
用纯化学势，乘以它们的浓度，代替这些化学势。
And instead of these chemical potentials, you would write them in terms of the pure chemical potentials times their concentrations.
到达某个程度时化学势，会由于压强的改变而平衡。
And at some point the chemical potentials will equalize because of the change in pressure.
现在，化学势，就像我们看到的，等于吉布斯自由能。
Now, the chemical potential, as we saw, was the Gibbs free energy.
包括化学势。
因为这是气相的化学势。
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