So if I tell you that the energy for single hydrogen atom is negative 13 12 kilojoules per mole.

如果我告诉大家单个氢原子的能量,是负的，1312，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

So, what we get for the disassociation energy for a hydrogen atom is 424 kilojoules per mole.

因此，我们就得到了氢原子,离解能的大小为，424，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

If I have one that's 400 kilojoules per mole and another that's 200 kilojoules per mole and I blend them, how do I get 500 kilojoules per mole?

如果你有一个每摩尔400千焦的分子,和一个没摩尔200千焦的分子,我把它们并子一起，我怎么得到每摩尔500千焦的键？

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In contrast, the dissociation energy of a bond for hydrogen, and molecular hydrogen is everywhere around us, we see 432 kilojoules per mole.

相反，氢分子在我们周围到处都是，一个氢分子的离解能，是432千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

So we know what that number would be, it would be negative 424 kilojoules per mole that we see here.

我们知道它的值是多少，它就是我们在这见到过的负，424，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

So, let's compare this to the energy of the h 2 molecule, and we find that that's negative 3,048 kilojoules per mole.

那么，让我们将它与氢分子的能量比一比，我们发现氢分子的能量是负的，3048，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

So, for example, for the chlorine case, we would say that the electron affinity for chlorine is actually positive 349 kilojoules per mole.

比如，以氯为例，我们可以说氯的电子亲和能,应该等于正的，349，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

So this is not going to be a favorable process, we're going to find that the electron affinity is actually a negative 7 kilojoules per mole for nitrogen.

因此这并不是一个容易发生的过程，我们会发现氮的电子亲和能,应该是负的，7，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

If we want to talk about two hydrogen atoms, then we just need to double that, so that's going to be negative 2 6 2 4 kilojoules per mole that we're talking about in terms of a single hydrogen atom.

而要讨论两个氢原子，我们只需要把它乘以二，因此应该是负的，2624，千焦每摩尔,这就是单个的氢原子的情况。

麻省理工公开课 - 化学原理课程节选

So, if we took the case of nitrogen, if we add an electron to nitrogen and go to n minus, we find that the change in energy is 7 kilojoules per mole.

如果我们以氮为例，如果我们给氮增加个电子令它变成-1价的氮，我们会发现能量的变化是，7，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

This means in order to do that we actually have to put 7 kilojoules per mole of energy into the reaction to make it happen.

这意味为了完成上面的反应,我们不得不往里面注入,7，千焦每摩尔的能量。

麻省理工公开课 - 化学原理课程节选

And the change in energy for this reaction is negative 349 kilojoules per mole.

然后得到这个过程的能量变化为,负的，349，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

It only has a dissociation energy of . 1 kilojoules per mole.

它的离解能只有0。01千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

Essentially we're not going to see this, it's 9 kilojoules per mole.

本质上我们不会看到它，它等于9千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

So for b 2, which is a single bond, that's 289 kilojoules per mole to break it, and it takes us more energy to break this double bond for carbon, which is 599 kilojoules per mole.

对于B2，它是单键，需要289千焦每摩尔来打破它，而对于碳双键,打破它要更多的能量，等于599千焦每摩尔。

麻省理工公开课 - 化学原理课程节选