在无机化学教学中,使用大量的复杂的结构计算是不可能的。许多作者[1—6]都把简便的热化学循环应用到无机化学中来,计算简便,易于理解,解决了许多无机化学问题。本文把涉及到自由能、焓和熵概念的热化学循环、再缩小到仅涉及焓概念的热化学循环加以讨论,便于初学者掌握。 In inorganic chemistry teaching, it is impossible to use a large number of complicated structural calculations. Many authors [1–6] have applied simple thermochemical cycles to inorganic chemistry. The calculations are simple, easy to understand, and solve many inorganic chemistry problems. This article discusses thermochemical cycles that involve the concepts of free energy, enthalpy, and entropy, and narrows it down to a thermochemical cycle that only involves the concept of helium. This is easy for beginners to grasp.