Tm. Letcher et Pu. Govender, THE EXCESS MOLAR VOLUMES OF (AN ALKANOL PLUS A BRANCHED-CHAIN ETHER) AT THE TEMPERATURE 298.15 K AND THE APPLICATION OF THE ERAS MODEL, Fluid phase equilibria, 140(1-2), 1997, pp. 207-220
The excess molar volumes V-m(E) {x(CH3OH or CH3CH2OH or CH3(CH2)(2)OH
or CH3CH(OH)CH3 + (1 - x)(CH3(CH2)(2)}(2)O or CH3C(CH3)(2)OCH3 or CH3C
H2C(CH3)(2)OCH3} have been calculated from measured values of density
over the whole composition range at the temperature 298.15 K in order
to investigate OH ... O specific interactions. The results are explain
ed in terms of the strong self-association of the alkanols, the specif
ic interaction between the alkanol, and the ether molecules and packin
g effects upon mixing. The experimental V-m(E) results presented here,
together with the previously reported data for the molar excess entha
lpy H-m(E), has been used to test the Extended Real Associated Solutio
n (ERAS) model. (C) 1997 Elsevier Science B.V.