Claim · draft · confidence 0.5
Generated from the Hyphae knowledge graph.
Statement: ΔH° = +172 kJ/mol applies to charcoal (amorphous carbon) vs. graphite
Needs verification (non-blocking)
JANAF tables are for graphite as the reference state. The enthalpy of amorphous carbon (charcoal) differs slightly from graphite (~1–3 kJ/mol difference in carbon standard enthalpy). For the purposes of ironmaking thermodynamics this difference is negligible, but for precise thermochemical calculations a correction should be applied.
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