Conductometric Studies of Acidic Properties of Derivatives of Benzoic Acid in Mixed Amphiprotic Solvents

• Main Authors: Chang, Shu-Yin, 鄭舒尹
• Other Authors: Hao, Hsieh-Sui
• Format: Others
• Language: zh-TW
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/59239732126572624918

碩士 === 淡江大學 === 化學學系 === 81 === The major works of this research is to study the affect of dielectric constant, autoprotolysis constant, and other physical or chemical constants of mixed amphiprotic solvents on the dissociation of derivatives of benzoic acid. The PKa values was estimated by conductometric method. Personal computer which was connected with conductometer was used not only for recording the data in measurements but also for caculating the results of experiment. The mixtures of water,methanol and ethanol in different ratio was used as amphirpotic solvents, and the derivatives of benzoic acid was used as solutes. The PKa value of solutes in different mixed solvents and the effects of physical constants of solvents and the structures of solutes was widely discussed in this paper.