If you look up in the corner of your Periodic Table on one of the sides, they have actually tabulated this for you.

你认真看一下角落上,在一个角落，应该已经为你们把数据列成表了。

麻省理工公开课 - 固态化学导论课程节选

We can tabulate them. We can know them, and then when we have reactions that inter-convert different compounds, we can calculate the heat of reaction is just the difference between the heat of formation of the reactants, and the heat of formation of the products, right.

种化合物的生成热，可以把它们列成表,可以认知它们，而当我们要处理，在不同化合物间转变的反应时,我们只要计算反应物和,生成物的生成热之间的不同,就能计算出反应热。

麻省理工公开课 - 热力学与动力学课程节选