- 期刊
羧酸與酚類混合物在2-甲氧基乙醇中之電化學研究(I)－單質子羧酸與酚類混合物之電導分析
Electrochemical Studies of Mixtures of Carboxylic Acids and Phenols in 2-Methoxyethono (I) - Analysis of Mixtures of Monocarboxylic Acids and Phenols by Conductome tric Method
摘要
本文取五種在水中有相近pKa值的羧酸及酚類，用電導法測出它們溶在2-甲氧基乙醇中有不同的pKa值。如用2-甲氧基乙醇為溶劑，以NN'-雙胺基胍為標準鹼，在隔絕空氣的條件下作電導滴定，發現其滴定曲線的轉折點可以顯示滴定終點而可將混合物的成份準確地分別定量。回復率近於1表示滴定效果良好。滴定曲線與pKa之關係亦加以討論。
關鍵字
無資料並列摘要
The pKa values of some carboxylic acids and phenols are determined by corductome trio method. Conductometric titrations of mixtures of carboxylic acids and phenols in non-aqueous solvent are described. 2-Methomeihanol is a suitable differentiating solvent for quantitative determination of the above mixtures, using N, N -diphenylgu- anadine as standard base, in conductometric method. Titration curves are also discussed.
並列關鍵字
無資料延伸閱讀
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