Partial specific heat capacity of benzene and of toluene in aqueous solution determined calorimetrically for a broad temperature range

Abstract

Using a precise scanning-microcalorimetric technique, the heat-capacity difference between water and an aqueous solution of benzene or of toluene has been measured for a broad temperature range (from 278 to 413 K) under excess pressure, and the partial specific heat capacity of these solutes has been determined. The hydration increment of the heat capacity of benzene and of toluene is proportional to the respective surfaces and decreases asymptotically as the temperature increases, as predicted by Gill et al. (1)