Class HessLaw

java.lang.Object

org.episteme.natural.chemistry.thermochemistry.HessLaw

public class HessLaw
extends Object

Thermochemistry calculations using Hess's Law.

Based on: G.H. Hess, "Thermochemische Untersuchungen", Annalen der Physik und Chemie, Vol. 50, pp. 385-404, 1840.

Hess's Law states that the total enthalpy change of a reaction is independent of the pathway taken (path independence of state functions).

Since:

1.0

Author:

Silvere Martin-Michiellot, Gemini AI (Google DeepMind)

Method Summary

Modifier and Type	Method	Description
static Quantity<Energy>	calculateEnthalpyOfReaction(Map<String,Real[]> productEnthalpies, Map<String,Real[]> reactantEnthalpies)	Calculates the enthalpy of reaction using Hess's Law.
static boolean	isExothermic(Quantity<Energy> enthalpyOfReaction)	Determines if reaction is exothermic or endothermic.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

calculateEnthalpyOfReaction

public static Quantity<Energy> calculateEnthalpyOfReaction(Map<String,Real[]> productEnthalpies,
 Map<String,Real[]> reactantEnthalpies)

Calculates the enthalpy of reaction using Hess's Law. ΔH_rxn = Σ(ΔHf products) - Σ(ΔHf reactants)

Parameters:

productEnthalpies - Map of product formula to (coefficient, ΔHf in kJ/mol)

reactantEnthalpies - Map of reactant formula to (coefficient, ΔHf in kJ/mol)

Returns:

Enthalpy of reaction in kJ/mol

isExothermic

public static boolean isExothermic(Quantity<Energy> enthalpyOfReaction)

Determines if reaction is exothermic or endothermic.