Irreversible reaction
Causticizing
- Direction
- Irreversible
- Processes
- 1
- Stated as
- Stoichiometry only
- Heat of reaction
- ΔH = -5,200 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
| Species | Name | CAS | Role | Coefficient |
|---|---|---|---|---|
| Na2CO3 | Sodium carbonate | 497-19-8 | reactant | -1 |
| CaH2O2 | Calcium hydroxide | 1305-62-0 | reactant | -1 |
| CaCO3 | Calcium carbonate | 471-34-1 | product | 1 |
| NaOH | Sodium hydroxide | 1310-73-2 | product | 2 |
In the processes
- Bleached softwood kraft pulp with chemical recovery (1000 ADt/d market pulp, concept)Concept · not reviewed
CAUST· CausticizingNa2CO3 + Ca(OH)2 → CaCO3 + 2 NaOH- Phase
- mixed
- Element balance
- Balances in every element
- Heat of reaction
- ΔH = -5,200 kJ/kmol at 298.15 K, as written (assumed: formation enthalpies Na2CO3(aq) -1157.4, NaOH(aq) -470.1, CaCO3(s) -1207.6, Ca(OH)2(s) -985.2 kJ/mol (NBS tables))
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.
formation enthalpies Na2CO3(aq) -1157.4, NaOH(aq) -470.1, CaCO3(s) -1207.6, Ca(OH)2(s) -985.2 kJ/mol (NBS tables)
For the heat of reaction · cited by Bleached softwood kraft pulp with chemical recovery (1000 ADt/d market pulp, concept)