A semi-empirical method for calculating the enthalpy of combustion of amides (Short Communication)

Alma Kairlapovna Ryskaliyeva, Murat Ergaliyevich Baltabayev, Kurmankul Tuleutaevna Abaeva


Enthalpy of combustion is one of the basic thermochemical characteristics of organic compounds, indicating the amount of heat produced by the complete combustion of the substance. The enthalpies of combustion of many organic compounds have been determined experimentally. So far existing empirical approaches have aimed to calculate the combustion enthalpy of individual classes only, which do not always satisfactorily agree with the experimental results. Therefore, the method of correlation-regression analysis has been proposed here to establish the combustion enthalpies of previously unexplored compounds. As is known, a linear relationship between two characteristics is possible if only both of them obey the principle of additivity, i.e., in homologous series of organic compounds with an increase in the number of CH2-groups, the value of additive characteristic (for example, the enthalpy of vaporization) should increase by a certain constant amount.


еnthalpy of combustion; amides; thermochemistry

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DOI: https://doi.org/10.2298/JSC180809094R

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