Ionization constants of two overlapping dibasic acids, succinic acid (butandioic acid) and tartaric acid (2,3-dihydroxybutandioic acid) have been studied at different temperatures between 25 to 50·C and in mixed organic-water solvent mixtures (dioxane-water, ethanol-water and methanol-water). Both succinic ad tartaric acids are symmetrical dicarboxylic acids with the same length of carbon chain but are markedly different in ionic behaviour at different temperatures and in all solvent systems. The effect of temperature on the thermodynamic parameters were calculated and interpreted.  


SAEED UDDIN ,A W K KHANZADA ,