Benzene – diethyl ether association. The excess molar enthalpy of (cyclohexane + diethyl ether)(g) and (benzene + diethyl ether)(g) from temperatures 353.2 K to 423.2 K

Benzene–polar fluid association. An analysis of measurements of the vapour phase excess molar enthalpy of mixtures of (cyclohexane, or benzene + polar and non-polar fluids)

“…Subsequent analysis made using the table 1 potential parameters yielded −(5.3 ± 2) kJ · mol −1 . Finally it should be noted that the combining rule, equation (17), which worked for the (cyclohexane + nitrogen or methane) measurements, also fitted the (cyclohexane + carbon dioxide) measurements.…”

“…The 11 sets of parameters were much the same, and an overall best set of parameters for water were selected among them. The result was that B 12 for mixtures of (water + non-polar fluid) can be calculated from the water parameters ε/k = 233 K, σ = 0.312 nm, and t * = 1.238 used in conjunction with the combining rule given by equation (17). The second virial coefficient of water dimer was calculated from these parameters assuming an association model (39) in which B is given by:…”

“…Excess molar enthalpies were measured for (ether + cyclohexane or benzene). (17) These experiments were difficult, and about 30 dm 3 of ether were used. The scatter on the (ether + cyclohexane) measurements is larger than that on the (ketone + cyclohexane) measurements.…”

“…A single stage high pressure flow mixing calorimeter (12) was also used, and in this instrument the Joule-Thomson effect was negligible. The measurements were made on (cyclohexane, or benzene + nitrogen, (13) or methane, (10) or carbon dioxide, (14) or dimethyl ketone, (15) or diethyl ketone, (16) or ether, (17) or dioxane, (18) or chloromethane, (19) or dichloromethane, (20) or chloroform, (21) or tetrachloromethane, (20) or water, (22) or methanol, (23) or ethanol (24) ). For some of these fluids the available pure component second virial coefficients were either of poor quality, or in the case of dioxane non-existent.…”

Quadrupole coupling in (carbon dioxide+dioxane)(g). The excess molar enthalpy and second virial cross-coefficient of (dioxane+carbon dioxide or propane)(g)

“…In a recent series of papers, we reported vapour phase measurements of the excess molar enthalpy H E m of mixtures of benzene, or cyclohexane with the polar fluids carbon dioxide, (1) dioxane, (2) ether, (3) dimethyl ketone, (4) diethyl ketone, (5) chloromethane, (6) dichloromethane, (7) chloroform, (8) water, (9) methanol, (10) and ethanol. (11) The measurements were made at standard atmospheric pressure using either a single-stage flow-mixing calorimeter, (12) or a differential flow-mixing calorimeter.…”