Title: Heats of combustion of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, n-propylbenzene, and styrene
Abstract: The heats of combustion of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, n -propylbenzene, and styrene were measured with a bomb calorimeter.The following values were obtained for the heat of combustion, at 25° C and constant pressure, of the liq uid hydrocarbon in gaseous oxygen to form gaseous carbon dioxide and liquid water, with all the r eactants and products in their thermodynamic standard reference states, in international kilojoules per mole: Benzene,3267.09±0043; tolU ene, 3909.31 ± 0 049; ethylbenzene, 4564.09± 0.72 ; o-xylene, 4552.10 ± 1.02 ; m-xylene, 4551.10 ± 0.62; p-xylene'w4552.09± 0.91 ; n-propylbenzene, 5217.37 ± 0.68 ; styrene 4394.14 ± 0.82.ith the factor 1/4.1833, the corresponding values in kilocalories per mole are b enzene, 780.98 ±0.10;tolueue, 934.50 ± 0.12; ethylbenzene, 1091.03 ± 0.17; o-xylene, 1088.16 ± 0.24 ; m-xylen e, 1087.92 ± 0.15; p-xylene, 1088.16 ± 0.22 ; n-prop ylbenzene, 1247.19 ± 0.16 ; styrene, 1050040 ± 0.20.