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盖斯定律是瑞士化学家盖斯通过大量实验证明的一条关于反应热的定律,其核心内容是:不管化学反应是一步完成或分几步完成,其反应热是相同的。或者说,化学反应的反应热只与反应体系的始态和终态有关,而与反应的途径无关。盖斯定律在科学研究中的重要意义是测定和计算反应热。盖斯定律及其应用是高考的重要考点(考试大纲要求:理解盖斯定律,能运用盖斯定律进行有关反应焓变的简单计算)。多年来,高考命题者
Gass’s law is a rule by Swiss chemist Gass through a large number of experiments on the heat of reaction. The key point is that the reaction heat is the same regardless of whether the chemical reaction is completed in one step or in several steps. Or, the reaction heat of chemical reaction only with the initial state and final state of the reaction system, and has nothing to do with the reaction. The significance of Gass’s law in scientific research is to measure and calculate the heat of reaction. Gass’s law and its application is an important test of the college entrance examination (syllabus requirements: Understanding Gass’s law, the use of Gass’s law can be simple calculation of the reaction enthalpy change). Over the years, the college entrance examination proposition