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以前对盐类水解的本质的理解受到实验仪器的限制,有经验的教师会利用平衡移动原理进行理论剖析讲解盐类水解的本质,但学生无法通过明显的实验现象感知水解的本质。以Na_2CO_3溶液显碱性为例,运用pH传感器捕捉平衡移动过程中pH的细微变化,让学生直观地感受水解的本质,从而激发学生的学习兴趣,激活学生的思维,在短时间有效解决疑点,突破难点。
Previously, the understanding of the nature of salt hydrolysis was limited by experimental instruments. Experienced teachers used the principle of equilibrium shift to explain the nature of salt hydrolysis theoretically, but students were unable to perceive the nature of hydrolysis through obvious experimental phenomena. Take Na_2CO_3 solution as an example, the pH sensor is used to capture the subtle changes of pH in the process of equilibrium movement, which enables students to intuitively feel the essence of hydrolysis, thereby stimulating students ’interest in learning, activating students’ thinking, effectively solving the doubt in a short time, Break through difficulties.