Abstract
The enthalpies of dissolution of argolide (C15H20O3) in 96% ethanol are determined by isothermal calorimetry at 298.15 K and different dilutions of 1: 18 000, 1: 36 000, and 1: 72 000 (by mole). The standard enthalpy of dissolution of argolide in 96% ethanol is calculated from the obtained data: (86 ± 17) kJ mol−1. The temperature dependence of heat capacity of C15H20O3 is studied by means of dynamic calorimetry. An equation is derived to describe the С 0 p ~ f (Т) dependence, and the standard heat capacity at 298.15 K is found to be (393 ± 13) J mol−1 K−1. The enthalpies of combustion, fusion and formation of argolide are calculated via approximation.
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Original Russian Text © Sh.B. Kasenova, G.A. Atazhanova, B.K. Kasenov, Zh.I. Sagintaeva, A.S. Kishkentaeva, S.M. Adekenov, 2017, published in Zhurnal Fizicheskoi Khimii, 2017, Vol. 91, No. 1, pp. 10–13.
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Kasenova, S.B., Atazhanova, G.A., Kasenov, B.K. et al. Thermochemistry of sesquiterpene lactone argolide. Russ. J. Phys. Chem. 91, 6–9 (2017). https://doi.org/10.1134/S0036024417010113
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DOI: https://doi.org/10.1134/S0036024417010113