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Thermodynamic properties of cis-2-butene from 15 degrees to 1,500 degrees K

1944; US government; Volume: 33; Issue: 1 Linguagem: Inglês

10.6028/jres.033.001

2376-5305

R.B. Scott, William Ferguson, F. G. Brickwedde,

Thermodynamic properties of mixtures

The followin g properties of a sample of cis-2-butene, 99.94 percent pure ~ were measured: (1 ) the sp ecifi c heat of solid and of li quid from 15° to 300 o K, (2) h eat of fusion at the triple point (130.25 into joule g_l) , (3) triple-point temperature ( -13S.900 ± O.OOSo C) , (4) heats of vaporization at several temperatures between 246° and 2 93°K, and (5) vapor pressure from 200° to 296°K.With these experimental data, calculations were made of (1) the normal boiling temperature (3.71S°C) , (2) volume of the saturatcd vap or, (3) ent ha lpy and ent ropy of the solid and the liquid from 0° to 300 0 K , and (4) entropy, enthalpy , and spccific heat of the vapor in the ideal gas state from 245 ° to 300°K, Thermodynamic functions for cis--2-butene in the idea.lga.s state from 300° to l,500 0 K were calculated from spectroscopic data .Thermodynamic data for the cis-trans isomerization of 2-butene are included.