目前使用的师范专科学校《无机化学》教材中,在阐述和使用△G与△G°时,出现了科学性错误,致使学生在学习过程中产生误解,有必要加以澄清。仅以书中一例题为例来说明其错误所在及正确结论如何。 原题及解答如下:计算反应H_2O(l)=H_2O(g)在(1)293K;(2)373K;(3)432K下的△G,并估计反应是否自发。 At present, the “inorganic chemistry” teaching materials used in normal colleges and universities have made scientific mistakes in elaborating and using △ G and △ G °, which have led to misunderstandings in the learning process and need to be clarified. Only one case in the book as an example to illustrate the error lies and correct conclusion. The original questions and answers are as follows: Calculate the reaction H_2O (l) = H_2O (g) at (1) 293K; (2) 373K; (3) △ G at 432K and estimate whether the reaction spontaneously.