大一化学中标准平衡常数的教学

The Teaching of Standard Equilibrium Constant in University Chemistry for Freshman Students

标准平衡常数贯穿于工科大一化学教材中的所有化学平衡,可用于讨论单相或多相平衡体系,也可以和标准热力学函数相联系。学生学习时感觉难度大,不易掌握,是大一化学教学的难点。文章总结了目前工科大一化学教材中标准平衡常数的各种计算方法、计算公式,并对公式的使用进行了解释说明,有助于学生更好地理解和掌握标准平衡常数。

Standard equilibrium constant runs through the all chemical equilibrium in chemical textbook for freshman chemistry in engineering course, it is used to discuss single-phase or multiphase equilibrium system, and also related to standard thermodynamic function. Because of this, it is difficulty for the tutor to teach and also hard to learn for the students in the class. The paper summarizes calculate method and formula for standard equilibrium constant in the textbook at present. In addition, some explanations are given for the formula. It is very helpful for these students to better understand and master standard equilibrium constant.