Abstract The basic point of this study is the concept teaching of “intermolecular forces”, and the conceptual cognitive model of handheld technology TQVC is the theoretical basis. By measuring the temperature change curves of 1, 2-propanediol, 1, 3-propanediol and the two mixed alcohols under the same conditions, and comparing the influence of hydrogen bond types on the change of evaporation behavior curve, it was found that the temperature increased first and then decreased. This is not consistent with the phenomenon and conclusions of monohydric alcohol research published by Su Hua-Hong, Qian Yang-Yi et al. Therefore, through the Tetra-Representation model, the following conclusions are drawn: under the same conditions, due to the presence of intramolecular hydrogen bonds and intermolecular hydrogen bonds in some organic compounds, solvation occurs when evaporation takes place with water vapor in the air, and the change of thermal effect is jointly affected by evaporation and solvation.
WANG Xi-Yu, QIAN Yang-Yi, HUANG Le-Xian. Comparison of Molecular Interaction Force of Propanediol Isomers Based on Hand-Held Technology Experiment*[J]. Chinese Journal of Chemical Education, 2020, 41(17): 86-91.
