- 作者: 潘貫; 周子山; 黃德順
- 作者服務機構: Contribution from Chemistry Research, National Taiwan University, Taipei
- 中文摘要: Electrolytic behavior of rhodizonic acid (H2Q) was polarographically studied in a series of acetate buffers and ammonium buffers of various pH values at 20°, 25°, 30° and 35°. Two well-defined waves were observed in the pH range of 1~5 and 8~9.4, but only one wave was observed in the pH range of 5.5~7.0. Polarographic and conductometric titrations of rhodizonate with barium chloride and the reverse titrations indicate the formation of BaQ. Solubility product constant Ksp and activity product constant Ko of BaQ were evaluated from the polarographic data at various temperatures, and were found to be log Ksp =1,910/T-8.190 and log Ko = 2,080/T-8.815.
- 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --