Heat Capacities of Aqueous 2-Butoxyethanol in the Water-rich Region by Adiabatic Calorimetry
1994 年 21 巻 3 号 p. 130-133
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1994 年 21 巻 3 号 p. 130-133
Heat capacities of aqueous 2-butoxyethanol at mole fraction, xBE=0.01702 and 0.01950, were measured from 271 to 313K by adiabatic calorimetry. The data at xBE=0.01702 were compared with those at xBE=0.01703 obtained by differential scanning calorimetry in paper I [Chem. Phys. Lett. 217, 245 (1994)]. They agreed within 0.2%. The temperature dependence was not the same, but similar in that the temperature derivative, ∂Cp/∂T, showed a step anomaly at the same temperature. The conclusion drawn in paper I is therefore correct. The observed small difference in the temperature dependence was attributed to the difference in thermal conductivity between the sample solution and pure water used as the reference in differential scanning calorimetry.
