Let me do it in blue. The total pressure if you add up these two straight lines together, you got another straight line.
我用绿色的粉笔画出这个，总压强,如果你把这两个直线加起来，就会得到另一条直线。
This tells me what happens at equilibrium to the amount of NO2 as I change the total pressure.
这告诉了,我们如果在平衡时2,改变总压强NO2的量会发生什么变化。
So, if we start at one, and now there's some total pressure.
所以，如果从第一点开始，有一定的总压强。
The only way, the only place, where the total pressure comes in, is right here.
唯一的方法唯一的地方，总压强能够出现的是这儿。
But it's a function of the total pressure.
但是这个分压是总压强的函数。
Total pressure is going to look the same.
总压强看起来是一样的。
So all the, both of the partial pressures and the total pressure are going to go lower than indicated here.
那么所有的，两个分压，和总压强会比，这里指示的低。
And this is where the total pressure comes in.
这是总压强出现的地方。
It's the molar fraction of B in the gas phase times the total pressure.
这分压等于气相中b的摩尔分数，乘以总压强。
And our question is, what we're going to be asking is, how many, if I give you the total pressure and the temperature here, what else do I need to know to find out all these molar fractions?
我们的问题是，如果我们被问到多少，如果给定总的压强和温度，我们还需要知道什么，才能知道混合的摩尔分数？
Because really what we want is the total pressure as a function of the composition in the gas phase.
因为我们想要的是，总压强作为气相组分的函数。
So when we look at problems where we change the pressure, the total pressure of the system, this is going to stay the same.
所以当遇到，压强改变系统的，总压强改变的问题时，这项是不变的。
Are we going to try to figure out how the total pressure above the solution changes.
我们能不能得到溶液上的总气压，是如何变化的。
Tells you the pressure of, the total pressure, or partial pressure at coexistence and the composition.
告诉我们总压强，共存曲线上分压和组分比。
It's a function of the total pressure.
它是总压强的函数。
This is just a number that doesn't care what the total pressure is.
这是一个与，总压强无关的数这。
So when I have a pure water solution, the total pressure is going to be the same as the vapor pressure of water at a particular temperature Let's take temperature fixed at some value.
当溶液是纯水时，总压强应该等于纯水，在特定温度下的蒸汽压，我们让温度固定。
Trying to see how the partial pressure of a changes with the total pressure.
现在看看分压如何，随着总压强变化。
So I'm going to find the total pressure as a function of the composition in the gas phase.
我想找到总压强作为，气相中组分的函数。
So let's take the derivative of this with respect to total pressure. Well, this isn't total pressure.
对这个方程两边对总的压强求导，好，这里不是总压强。
I'm going to have the total pressure is going to be the partial pressure of the water.
我先考虑总压强，等于水的蒸汽压的情况。
And the total pressure is given by the piston here.
总的压强由，活塞给出。
I've got a at one bar here, total pressure of one bar.
一巴的A在这，总压强是一巴。
So this is the total pressure of a and B.
这是A和B的总压强。
So we have total pressure in front.
总压强在前面。
We plug in all the numbers, and we get that the total pressure is now 0.685 bar.
把这些数都代入方程，总气压等于0。685巴。
I'm going to go to the second one, which is the effect of the total pressure on the reaction.
来看第二个，总压强对反应的影响。
Well, as long as you keep the pressure, the total pressure, constant, Kx then you should be able to use Kx.
好只要压强不变，总压强不变，那么就应该用。
So pure A. And pA is the vapor pressure of the mixture Which in this case here is the total pressure, because I don't have anything else that's volatile.
即纯净的A物质，pA是混合物得蒸汽压，在这里是总压强，因为我们没有加入任何不易挥发的溶质。
I want p, total pressure, as a function of yB.
我想知道p，总压强，作为yB的函数。
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