A chronopotentiometric investigation of the dissociation of sulphate ions in molten equimolar NaCl-KCl at 750°C |
| |
Authors: | D. M. Wrench and D. Inman |
| |
Affiliation: | Department of Chemistry, The City University, London, E.C.1 England |
| |
Abstract: | The Lux—Flood acid—base equilibrium SO3 + O2− SO42− in molten equimolar NaCl/KCl at 750°C has been investigated using conventional chronopotentiometry. The equilibrium constant for this reaction is shown to be very high (K > 102). Thus the sulphate ion in solution in this melt does not decompose unless a very strong acid such as the metaphosphate ion is added to the melt. This removes oxide ions according to the reaction. 2PO3− + SO42− → SO3 + P2O74− The pyrophosphate anion is not a sufficiently strong acid to remove oxide from sulphate. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |