Now we basically just talked about enthalpy.

现在我们基本上只讨论焓。

These measurements are done at standard conditions, which we discussed in the enthalpy and entropy episodes.

这些测是在标准条件下完成的， 我们在焓和熵情节中对此进行了讨论。

Well it's mostly going to be delta G. So changes in enthalpy and changes in entropy.

嗯，它主要是 delta G。因此焓的变化和熵的变化。

Why enthalpy change is different from heat, even though they turn out to be pretty much the same anyway.

为什么焓变与热不同， 实证明它们几乎是一的。

And we measure enthalpy with a weird little science called calorimetry.

我们用一种热法的奇怪小科学来测焓。

These are going to be the enthalpies of that solution.

这些将是该解决方案的内涵。

Those bonds are nothing but energy, and using enthalpy, we can measure how much energy they have.

这些键只不过是能， 使用焓，我们可以测它们有多少能。

The law itself says nothing about the standard enthalpy of formation.

该法律本身并没有提到标准生成焓。

One of the big ones is going to be delta G. In other words it's going to be the enthalpy.

其中一个较大的变是 delta G。换句话说，它就是焓。

So, I wonder how that compares to the amount we would predict using Hess's Law and the standard enthalpy of formation?

所以，我想知道这与我们使用赫斯定律和标准生成焓预测的数相比如何？

Hess' Law is often stated in terms of standard enthalpies of formation.

赫斯定律通常用标准生成焓来表述。

As long as you start with the same reactants and end with the same products, the enthalpy change is the same.

只要您从相同的反应物开始并以相同的产物结束， 焓变就相同。

Thanks to many hardworking chemists, the standard enthalpy of formation has been measured for hundreds of compounds.

感谢许多辛勤工作的化学家，已经测了数百种化合物的标准生成焓。

And I'm very happy the inventors knew how to calculate the enthalpy change of chemical reactions.

我很高兴发明者知道如何计算化学反应的焓变。

So, the formula for enthalpy is usually written as change in enthalpy.

因此，焓的公式通常写成焓变。

Change in enthalpy is equal to the heat gained or lost by the system.

焓变等于系统获得或损失的热。

Hopefully that sounds like fun because more about the ins and outs of this are coming in an episode on how to measure enthalpy.

希望这听起来很有趣，因为有关如何测焓的一集中将详细介绍这方面的来龙去脉。

So I guess in the capital H for enthalpy does kinda make sense.

所以我想在大写的 H 中表示焓确实有点道理。

Well no, because you don't even know why enthalpy is so cool.

嗯，不，因为你甚至不知道为什么焓这么酷。

In order to study this stuff carefully, he looked at the standard enthalpies of formation of the reactants and the products of a reaction.

为了仔细研究这些东西，他研究了反应物和反应产物的标准生成焓。