With the use of the known heats of combustions (kJ mol -1) in the condensed condition seven glycerides (I - tributyrin, II - trilaurin, III -trimyristin, IV - tripalmitin, V - tristearin, VI - triolein, VII - trierucin) equation D сH о = 41.0 - 109.4 (N - g), in which N is a number of valence , bond-forming electrons and g is a number of lone electron pairs of heteroatoms is deduced. For the same purposes dependence D сH о = -25.63 - 108.54 N, deduced earlier for calculation of the heat of combustion of various alkanes is used. It is shown, that the values calculated on both equations the heat of combustions of all glycerides well correspond each other. With the use of Hess-law were calculated the enthalpy of formation (D fH о) of glycerides, which also compare with the values, received from the experimental data.
глицериды, теплота сгорания, теплота образования, теплота парообразования, glycerides, heat of combustion, heat of formation, heat of vaporization
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