Reversible reaction

Hydrogen chloride synthesis (chlorine burnt in hydrogen)

H2+Cl22HCl

Direction
Reversible (an equilibrium)
Processes
1
Stated as
Fixed conversion
Heat of reaction
ΔH = -184,620 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-1
Cl2Chlorine7782-50-5reactant-1
HClHydrogen chloride7647-01-0product2

In the processes

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

    HCL_SYN · Hydrogen chloride synthesis (chlorine burnt in hydrogen)H2 + Cl2 ⇌ 2 HCl

    Stated as
    Fixed conversion
    Element balance
    Balances in every element
    Conversion
    100 % of Cl2 (assumed: D-005: equilibrium limit with 10 mol-% H2 excess; K = 2.6e19 at 523 K from the ideal-gas data leaves y(Cl2) about 7e-19 (scripts/balance.py); free Cl2 in product acid of real burners is of order 1 ppm (not modelled))
    Heat of reaction
    ΔH = -184,620 kJ/kmol at 298.15 K, as written (given: NIST-JANAF Thermochemical Tables (Chase 1998), table Cl-026: dHf(HCl, g, 298.15 K) = -92.31 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/Cl-026.html

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

  2. doi:10.1002/14356007.a13_283 (Ullmann, Hydrochloric Acid: route identity only, full text not read)

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

  3. D-005: equilibrium limit with 10 mol-% H2 excess; K = 2.6e19 at 523 K from the ideal-gas data leaves y(Cl2) about 7e-19 (scripts/balance.py); free Cl2 in product acid of real burners is of order 1 ppm (not modelled)

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

  4. NIST-JANAF Thermochemical Tables (Chase 1998), table Cl-026: dHf(HCl, g, 298.15 K) = -92.31 kJ/mol, x 2

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