Kasenova S.B.,Abishev Chemical Metallurgical Institute |
Atazhanova G.A.,AO International Research and Production Holding Phytochemistry |
Kasenov B.K.,Abishev Chemical Metallurgical Institute |
Sagintaeva Z.I.,Abishev Chemical Metallurgical Institute |
And 2 more authors.
Russian Journal of Physical Chemistry A | Year: 2017
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 Сp 0~ 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. © 2017, Pleiades Publishing, Ltd.