近代化学越来越重视化学反应的动力与阻力的辩证关系。例如,合成某种新材料,事先若能判断此反应能否发生,对于提高经济效益是十分有利的。又如,在我们生活的环境中,存在着少量CO 和NO 两种有害气体,在常温、常压下,如果NO_(g)+CO_(g)→CO_(2(g))+(1/2)N_(2(g))反应能自发进行,对于我们将是有利的。因为,它可以除去空气中这两种严重污染 Modern chemistry pays more and more attention to the dialectical relationship between motivation and resistance of chemical reaction. For example, the synthesis of a new material, if we can determine in advance whether the reaction can occur, is very beneficial for improving economic efficiency. For another example, in our living environment, a small amount of two kinds of harmful gases, CO and NO, are present. If NO_ (g) + CO_ (g) → CO_ (2 (g)) + (1 / 2) The N_ (2 (g)) reaction can proceed spontaneously and will be beneficial to us. Because it can remove these two kinds of serious pollution in the air