Reversible reaction

Combustion of the oxygen in the chlorine feed with excess hydrogen

2H2+O22H2O

Direction
Reversible (an equilibrium)
Processes
1
Stated as
Fixed conversion
Heat of reaction
ΔH = -483,652 kJ/kmol (one process)
Element balance
Checked: balances
As the processes state itStoichiometry, conversions, heats of reaction and catalyst windows are taken from each process's files with their provenance. The build checks only that each process's equation balances in every element, from the process's own component formulas; it does not check the numbers. A process's design maturity applies to them.

Species

SpeciesNameCASRoleCoefficient
H2Hydrogen1333-74-0reactant-2
O2Oxygen7782-44-7reactant-1
H2OWater7732-18-5product2

Also stated as each of 2 H2 + O2 → 2 H2O, 2 H2O → 2 H2 + O2 (reversible and irreversible statements are kept apart).

In the processes

  • Hydrogen chloride synthesis burner and absorption (33 wt-% hydrochloric acid, steam recovery)Concept · not reviewed

    H2_OX · Combustion of the oxygen in the chlorine feed with excess hydrogen2 H2 + O2 ⇌ 2 H2O

    Stated as
    Fixed conversion
    Element balance
    Balances in every element
    Conversion
    100 % of O2 (assumed: D-005: equilibrium limit with excess H2 (K of order 1e40 at 523 K); the oxygen of the chlorine burns to water in the hydrogen flame)
    Heat of reaction
    ΔH = -483,652 kJ/kmol at 298.15 K, as written (given: NIST-JANAF Thermochemical Tables (Chase 1998), table H-064: dHf(H2O, g, 298.15 K) = -241.826 kJ/mol, x 2)

Sources

What the processes cite for this reaction, each source once: for the reaction itself, its conversion, its heat of reaction or its catalyst. As the processes write them; DOIs, US patent numbers and web addresses are linked.

  1. https://janaf.nist.gov/tables/H-064.html

    For the reaction · cited by Hydrogen chloride synthesis burner and absorption (33 wt-% hydrochloric acid, steam recovery)

  2. D-005: equilibrium limit with excess H2 (K of order 1e40 at 523 K); the oxygen of the chlorine burns to water in the hydrogen flame

    For the conversion · cited by Hydrogen chloride synthesis burner and absorption (33 wt-% hydrochloric acid, steam recovery)

  3. NIST-JANAF Thermochemical Tables (Chase 1998), table H-064: dHf(H2O, g, 298.15 K) = -241.826 kJ/mol, x 2

    For the heat of reaction · cited by Hydrogen chloride synthesis burner and absorption (33 wt-% hydrochloric acid, steam recovery)