Determination of Molecular Diameter by PVT

Table 1

Comparison between the calculated 𝜎_{𝑃<?brm?>int<?erm?>} and experimental values of molecular diameters 𝜎_𝜂 for different fluids.

Fluid	𝜌/mol L^−1	𝑇/K	𝐴	𝐵	Δ𝑝/MPa	𝜎𝑃int,Å	𝜎𝜂,Å
^aAr	13.4074	200	0.9343	−0.0953	50–600	3.8249	3.434
^bN2	11.1839	70	2.8413	−0.2319	0.06–30	3.9151	3.722
^cCO	10.7400	200	0.8460	−0.0884	45–100	4.1351	3.706
^dCO2	10.6385	400	1.0995	−0.1019	40–100	4.0661	3.881
^eCH4	10.0720	250	0.9904	−0.1046	50–200	4.2321	3.774
^eC2H6	6.7600	400	1.05723	−0.1010	30–70	4.7535	4.48
^eC3H8	4.9300	400	1.2486	−0.0910	20–100	5.0481	5.061
^eC4H10	3.9230	500	1.1896	−0.0824	30–70	5.4016	5.339
^fC6H6	3.8620	640	1.1561	−0.0747	30–90	5.3673	5.270
^gC6H5CH3	3.1660	300	5.8742	−0.4648	0.1013–100	5.9318	932.5

References ^a[20], ^b[21], ^c[22], ^d[23], ^e[24], ^f[25], ^g[26].