Abstract Based on “quadruple representation” teaching mode, a series of handheld technology digital experiments are designed to explore the influencing factors of salt hydrolysis equilibrium. Through the discoloration phenomenon of aqueous solution with litmus, the macroscopic changes of (NH4)2SO4solution hydrolysis equilibrium movement is visualized. Using pH sensor, the pH curve of (NH4)2SO4 solution hydrolysis equilibrium movement is measured. By combining the macroscopic change with the pH curve, the microcosmic reaction principle will be deduced and then characterized by symbolic forms. Thus, these exploration experiments not only implement the cultivation of chemistry core literacy of developing students’ thinking conversion ability, macro-micro combination ability, scientific inquiry ability and evidential reasoning ability, but also provide materials for relevant teaching.
MENG Chao-Yue, CAI Xiao-Qing. Experimental Inquiry on Influencing Factors of Salt Hydrolysis Equilibrium Based on “Quadruple Representation” Teaching Mode[J]. Chinese Journal of Chemical Education, 2024, 45(17): 102-108.
