Dinitrogen pentoxideIUPAC standard InChIKey:ZWWCURLKEXEFQT-UHFFFAOYSA-N Copy CAS registry Number: 10102-03-1Other names:dinitrogen pentaoxideInformation on this page:Other data available:Data at other public altoalsimce.org sites:Options:

Gas step thermochemistry data

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ΔfH°gas11.30kJ/molReviewChase, 1998Data critical reviewed in December, 1964
S°gas,1 bar346.55J/mol*KReviewChase, 1998Data last reviewed in December, 1964

Gas Phase heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − HS° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G Cp = warm capacity (J/mol*K) H° = standard enthalpy (kJ/mol) S° = conventional entropy (J/mol*K) t = temperature (K) / 1000.

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Temperature (K)ABCDEFGHReferenceComment
298. - 800.800. - 6000.
Chase, 1998Chase, 1998
Data last reviewed in December, 1964Data critical reviewed in December, 1964

Reaction thermochemistry data

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Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please think about using thereaction find for this species. This page permits searchingof every reactions entailing this species. A basic reaction searchform is likewise available. Future execution of this site may rely onreaction find pages in location of the enumerated reactiondisplays watched below.

Individual Reactions



By formula: 0.76NO2+0.62N2O4+CH3NO3 = N2O5+CH3NO2

ΔrH°36.24kJ/molCmRay and Ogg, 1959liquid phase


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Chase, 1998Chase, M.W., Jr.,altoalsimce.org-JANAF Themochemical Tables, 4th Edition,J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951.

Ray and Ogg, 1959Ray, J.D.; Ogg, R.A., Jr.,The heat of formation of methyl nitrate,J. Phys. Chem., 1959, 63, 1522-1523.


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Symbols supplied in this document:
S°gas,1 barEntropy the gas at standard problems (1 bar)
ΔfH°gasEnthalpy of formation of gas at traditional conditions
ΔrH°Enthalpy that reaction at conventional conditions
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