STANDARD ENTHALPY OF FORMATION OF C2H4

This version of piersonforcongress.com results was partially explained in Ruscic et al. <4>, and also was also used for the initial advancement of high-accuracy piersonforcongress.comn composite electronic structure methods <5>. varieties Name Formula picture ΔfH°(0K) ΔfH°(298.15K) uncertainty Units loved one Molecular fixed piersonforcongress.com identifier Ethylene

C2H4 (g)

60.96

52.45

± 0.13

kJ/mol

28.0532 ±0.0016

74-85-1*0

Representative Geometry that C2H4 (g)

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top contributors to the provenance that ΔfH° the C2H4 (g)

The 20 contributors provided below account only for 47.9% of the provenance of ΔfH° the C2H4 (g). A complete of 493 contributors would be needed to account because that 90% of the provenance. Please note: The list is limited to 20 most important contributors or, if less, a number enough to account because that 90% that the provenance. The Reference acts together a further link to the relevant references and notes because that the measurement. The Measured Quantity is normaly offered in the original units; in instances where we have reinterpreted the initial measurement, the listed value might differ native that provided by the authors. The quoted apprehension is the a priori uncertainty offered as intake when building the early Thermochemical Network, and also corresponds either to the worth proposed through the initial authors or come our estimate; if second multiplier is given in parentheses automatically after the front uncertainty, it synchronizes to the factor through which the former uncertainty required to be multiplied during the piersonforcongress.com evaluation in stimulate to do that particular measurement regular with the prevailing knowledge had in the Thermochemical Network.

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contribution (%)TNID Reaction Measured amount Reference11.1

1779.1	C2H4 (g) +3O2 (g) →2CO2 (g) +2H2O (cr,l)	ΔrH°(298.15K)=-1411.18±0.30kJ/mol	Rossini 1937
4.9	117.2	1/2O2 (g) +H2 (g) →H2O (cr,l)	ΔrH°(298.15K)=-285.8261±0.040kJ/mol	Rossini 1939, Rossini 1931, Rossini 1931b, note H2Oa, Rossini 1930
4.9	1722.1	C2H6 (g) +7/2O2 (g) →2CO2 (g) +3H2O (cr,l)	ΔrH°(298.15K)=-1560.68±0.25kJ/mol	Pittam 1972
2.9	1780.1	C2H4 (g) +H2 (g) →C2H6 (g)	ΔrH°(355.15K)=-32.831±0.05kcal/mol	Kistiakowsky 1935
2.8	1642.1	2H2 (g) +C (graphite) →CH4 (g)	ΔrG°(1165K)=37.521±0.068kJ/mol	Smith 1946, keep in mind COf, 3rd Law
2.6	2555.1	CH2(CH2CH2CH2) (g) →2C2H4 (g)	ΔrG°(750K)=-13.37±0.12 (×1.61)kcal/mol	Quick 1972, 3rd Law, note unc3
2.3	2368.14	CH2CCH2 (g) +CH4 (g) →2C2H4 (g)	ΔrH°(0K)=-8.78±0.8kJ/mol	Ferguson 2013, est unc
2.0	3726.1	CH3CH2Cl (g) +3O2 (g) →2CO2 (g) +HCl (aq, 600 H2O) +2H2O (cr,l)	ΔrH°(298.15K)=-337.73±0.14 (×1.114)kcal/mol	Fletcher 1971, as quoted by Pedley 1986
1.8	1565.2	CO (g) →C+ (g) +O (g)	ΔrH°(0K)=22.3713±0.0015eV	Ng 2007
1.4	1780.2	C2H4 (g) +H2 (g) →C2H6 (g)	ΔrG°(723.15K)=-10.867±0.072kcal/mol	Kistiakowsky 1951
1.3	2368.11	CH2CCH2 (g) +CH4 (g) →2C2H4 (g)	ΔrH°(0K)=-2.24±0.25kcal/mol	Karton 2009b, Karton 2011
1.2	1855.5	2C2H4 (g) →HCCH (g) +C2H6 (g)	ΔrH°(0K)=9.26±0.20kcal/mol	Karton 2007
1.1	1766.1	C2H4 (g) →2C (g) +4H (g)	ΔrH°(0K)=2226.23±0.70kJ/mol	Harding 2007, Ferguson 2013
1.1	1519.7	C (graphite) +O2 (g) →CO2 (g)	ΔrH°(298.15K)=-393.464±0.024kJ/mol	Hawtin 1966, note CO2e
1.1	1856.1	C2H4 (g) →+ (g) +H2 (g)	ΔrH°(0K)=13.135±0.005 (×1.139)eV	Malow 1999, est unc
1.1	1856.2	C2H4 (g) →+ (g) +H2 (g)	ΔrH°(0K)=13.135±0.005 (×1.139)eV	Mahnert 1996
0.9	2368.12	CH2CCH2 (g) +CH4 (g) →2C2H4 (g)	ΔrH°(0K)=-2.38±0.3kcal/mol	Wheeler 2007
0.8	2267.12	CH3CH2CH3 (g) +CH4 (g) →2C2H6 (g)	ΔrH°(0K)=2.96±0.20kcal/mol	Karton 2011, Karton 2009b
0.8	2299.1	CH3CHCH2 (g) +9/2O2 (g) →3CO2 (g) +3H2O (cr,l)	ΔrH°(298.15K)=-2057.72±0.62kJ/mol	Rossini 1937
0.8	2559.1	CH2(CH2CH2CH2) (l) +6O2 (g) →4CO2 (g) +4H2O (l)	ΔrH°(298.15K)=-650.33±0.12kcal/mol	Kaarsemaker 1952, Coops 1950, as quoted by Cox 1970

height 10 varieties with enthalpies of formation correlated to the ΔfH° the C2H4 (g)

you re welcome note: The correlation coefficients are acquired by renormalizing the off-diagonal facets of the covariance procession by the corresponding variances. The correlation coefficient is a number indigenous -1 to 1, v 1 representing perfectly associated species, -1 representing perfect anti-correlated species, and 0 representing perfectly uncorrelated species. Correlation Coefficent(%)Species name Formula picture ΔfH°(0K) ΔfH°(298.15K) skepticism Units relative Molecular massive piersonforcongress.com identifier 99.9

Ethylene cation	+ (g) " style="margin:5px" />	1075.28	1068.07	± 0.13	kJ/mol	28.0526 ±0.0016	34470-02-5*0
66.0	Ethane	C2H6 (g)	-68.29	-83.91	± 0.14	kJ/mol	30.0690 ±0.0017	74-84-0*0
58.0	Ethyl chloride	CH3CH2Cl (g)	-96.76	-111.35	± 0.20	kJ/mol	64.5138 ±0.0019	75-00-3*0
56.5	Ethyl chloride	CH3CH2Cl (cr,l)	-134.15	-135.77	± 0.21	kJ/mol	64.5138 ±0.0019	75-00-3*500
49.9	Acetylene cation	+ (g) " style="margin:5px" />	1328.85	1328.18	± 0.14	kJ/mol	26.0367 ±0.0016	25641-79-6*0
49.9	Acetylene	HCCH (g)	228.84	228.28	± 0.14	kJ/mol	26.0373 ±0.0016	74-86-2*0
47.6	Carbon atom	C (g) " style="margin:5px" />	711.401	716.886	± 0.050	kJ/mol	12.01070 ±0.00080	7440-44-0*0
47.6	Carbon atom	C (g, triplet) " style="margin:5px" />	711.401	716.886	± 0.050	kJ/mol	12.01070 ±0.00080	7440-44-0*1
47.6	Carbon atom	C (g, singlet) " style="margin:5px" />	833.332	838.478	± 0.050	kJ/mol	12.01070 ±0.00080	7440-44-0*2
47.6	Carbon atom cation	C+ (g) " style="margin:5px" />	1797.854	1803.452	± 0.050	kJ/mol	12.01015 ±0.00080	14067-05-1*0

Most significant reactions entailing C2H4 (g)