Corollary from the Exact Expression for Enthalpy of Vaporization

Table 5

Calculation results for evaporation heat.

Sample	𝑇	𝑃	𝑉𝐿	Δ𝑉	𝑟𝑎	𝑉𝑎	𝑉fL	𝜎	𝜆ex	𝜆𝑇1	𝛿1	𝜆𝑇2	𝛿2
Ne	25	0,51	1,63	394	1,64	1,11	0,52	5,5	1790	1757	1,84	1796	0,36
Ne	28	1,32	1,70	164	1,64	1,11	0,59	4,45	1712	1665	2,75	1703	0,52
Ar	84	0,71	2,82	961	2,00	1,99	0,83	11,5	6459	6070	6,02	6272	2,89
Ar	90	1,34	2,90	533	2,00	1,99	0,91	10,5	6307	5895	6,53	6089	3,46
Kr	116	0,74	3,42	1259	2,11	2,37	1,05	16,1	9176	8377	8,71	8816	3,92
Kr	150	6,56	3,87	164	2,11	2,37	1,50	10,0	7886	7220	8,44	7590	3,75
Xe	170	1,34	4,50	1013	2,28	2,91	1,59	18,0	12446	11491	7,67	11830	4,95
Xe	216	9,19	5,10	164	2,28	2,91	2,19	10,0	10642	9740	8,48	10027	5,78
H2	25	3,21	3,10	48,82	1,45	0,77	2,33	1,13	836	831	0,60	833	0,34
H2	32	11,0	4,25	7,88	1,45	0,77	3,48	0,11	419	404	3,58	405	3,44
N2	68	0,29	3,31	1940	2,23	2,54	0,77	11,0	5822	5533	4,96	5742	1,38
N2	90	3,60	3,75	182	2,23	2,54	1,21	6,16	5057	4668	7,69	4832	4,46
O2	90	0,99	2,82	724	2,16	2,17	0,65	10,0	6800	6400	5,88	6583	3,19
O2	100	2,55	2,92	303	2,16	2,17	0,78	7,0	6490	5992	7,67	6163	5,04
F2	95	2,78	2,65	261	2,22	2,30	0,35	10,7	6775	6491	4,19	6636	2,04
Cl2	194	0,08	4,23	19377	2,44	3,66	0,57	34,0	22161	21925	1,06	21346	3,68
CH4	150	10,3	4,44	95,4	2,48	2,33	2,11	5,0	6656	6674	0,27	6087	8,55

𝑇 (K) is the evaporation temperature, 𝑃 *10⁻⁵ (Pa) is the pressure, 𝑉_𝐿*10⁵ (m³/mole) is the volume of liquid, Δ𝑉*10⁵ (m³/mole) is the volume change in evaporation, 𝑟_𝑎*10¹⁰ is the radius of atom (molecule), 𝑉_𝑎*10⁵ (m³/mole) is the volume occupied by atoms (molecules), 𝑉_fL*10⁵ (m³/mole) is the free volume of liquid, 𝜎*10³ (J/m²) is the surface tension coefficient, 𝜆_ex (J/mole) is the experimental value of evaporation heat, 𝜆_𝑇1 (J/mole) is the evaporation heat calculated from reference data on volume and size of atoms (molecules), 𝜆_𝑇2 (J/mole) is the evaporation heat calculated from data on volumes and dimensions of atoms (molecules) obtained in the present paper, and 𝛿₁ and 𝛿₂ (%) are relative errors.