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化学反应的标准平衡常数是表明反应系统处于平衡状态的一种数量标志,定量地描述了一定条件下可逆反应所能达到的最大限度~([1]),可以利用其来解决生产生活中的许多问题,如判断反应限度、预测反应方向、计算平衡组成及标准吉布斯自由能等。因此,在热力学学习中,化学平衡常数的测定和计算是一个非常重要的内容。目前,化学平衡常数的计算主要有两种思路:一是通过实验测定化学平衡组成,根据平衡时各组分浓度或分压来计算标准平衡常数;二是根据电化
The standard equilibrium constant of a chemical reaction is a quantitative indicator of the equilibrium state of the reaction system. It quantitatively describes the maximum that a reversible reaction under certain conditions can achieve ([1]), which can be used to solve the problems in production and life Many problems, such as judging the reaction limit, predicting the reaction direction, calculating the equilibrium composition and the standard Gibbs free energy. Therefore, in thermodynamics, the determination and calculation of chemical equilibrium constants are very important. At present, there are mainly two ways to calculate the chemical equilibrium constant: one is to determine the chemical equilibrium composition through experiment, calculate the standard equilibrium constant according to the concentration or partial pressure of each component at equilibrium,