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Heat Capacity and Thermodenamic Functions of 2-Methylbiphenyl and 3,3'-Dimethylbiphenil in the Range of 6 to 372 Kстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
- Авторы: Tkachenko E.S., Druzhinina A.I., Varushchenko R.M., Tarazanov S.V., Nesterova T.N., Reshetova M.D., Polyakova O.V.
- Журнал: Russian Journal of Physical Chemistry A
- Том: 87
- Номер: 5
- Год издания: 2013
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 705
- Последняя страница: 713
- DOI: 10.1134/S0036024413050269
- Аннотация: The heat capacities of 4-methylbiphenyl and 4-tert-butylbiphenyl were measured by vacuum adiabatic calorimetry in the temperature range from (8 to 372) K. The temperatures and changes of the enthalpy and entropy of the phase transitions have been determined. The saturation vapor pressures of the biphenyl derivatives were measured by dynamic transpiration method in the temperature and pressure intervals from (301 to 362) K and (0.09 to 69.5) K, respectively. The enthalpies of vaporization and sublimation at T = 298.15 K were derived. The main thermodynamic functions (changes of the entropy, enthalpy, and Gibbs energy) were obtained for the crystal and liquid states of the temperature intervals studied and for the ideal gas state at T = 298.15 K. The ideal gas entropies of the compounds under study were also calculated by the principle of additivity and the correlation equations of TRC data series of NIST. The values derived from the experimental and calculation data agree within (1 to 1.3) per cent that supports their reliability.
- Добавил в систему: Дружинина Анна Ивановна