Linked from

The 46 pages that link to Enthalpy, each with the reason it gives.

• EntropyCompared with: Unlike entropy, enthalpy tracks an energy quantity rather than multiplicity or dispersal.

• Gibbs free energyRelated: Enthalpy supplies the energy contribution in the definition of Gibbs free energy.

• First law of thermodynamicsBroader topic: At constant pressure, enthalpy change often tracks heat transfer directly.

• Transition stateRelated: Enthalpy changes help characterize the energetic cost of reaching a transition state.

• Latent heatRelated: At constant pressure, latent heat corresponds to the enthalpy change between phases.

• Activation energyRelated: Reaction enthalpy compares reactants and products, not the height of the activation barrier.

• Steam turbineNarrower topic: The steam’s enthalpy drop sets the ideal work available during expansion.

• Heat capacityRelated: At constant pressure, heat capacity is the temperature derivative of enthalpy.

• CalorimetryRelated: Constant-pressure calorimetry commonly determines enthalpy changes from measured heat.

• Internal energyRelated: At constant pressure, enthalpy change tracks energy transfer including expansion work.

• Lattice energyNarrower topic: Lattice energy is commonly reported as an enthalpy change at constant pressure.

• Joule–Thomson effectRelated: Its near-constant value across a throttle constrains the gas's temperature change.

• Clausius–Clapeyron relationRelated: For vaporization, enthalpy change is commonly used to express the entropy change.

• Electron affinityRelated: Some tabulated electron affinities report an enthalpy change for electron attachment.

• Vapor-compression refrigerationRelated: Refrigerant enthalpy changes quantify heat transfer and throttling across components.

• Rankine cycleRelated: Enthalpy differences track heat transfer and turbine or pump work in steady flow.

• Bond dissociation energyNarrower topic: Many tabulated bond dissociation values are enthalpy changes rather than raw energy differences.

• Chemical thermodynamicsRelated: At constant pressure, its change equals heat transfer when only pressure-volume work occurs.

• Thermodynamic potentialBroader topic: It is useful when pressure is controlled, and forms the basis of Gibbs free energy.

• CompressorRelated: Its increase tracks energy added to gas in many flowing compressors.

• Exothermic reactionNarrower topic: The enthalpy difference between products and reactants determines the reaction’s heat release at constant pressure.

• State functionBroader topic: It is a state function commonly used to track energy changes at constant pressure.

• Work (thermodynamics)Compared with: Enthalpy is a state property, whereas work depends on the process path.

• Free energyRelated: Gibbs free energy uses enthalpy as its energy contribution under constant-pressure conditions.

• State variableRelated: It serves as a useful state variable in constant-pressure processes.

• TurbineRelated: The enthalpy drop across a turbine measures energy available for conversion.

• Wet-bulb temperatureRelated: Moist-air enthalpy helps explain the near-constant-energy path of evaporative cooling.

• Helmholtz free energyCompared with: Enthalpy is useful at fixed pressure but does not include the explicit entropy subtraction of Helmholtz free energy.

• Differential scanning calorimetryRelated: Integrating a calibrated peak gives the enthalpy change of a transition.

• Enthalpy of vaporizationNarrower topic: The vaporization value is the difference in enthalpy between vapor and liquid states.

• Maxwell relationsRelated: Its natural variables yield a Maxwell relation linking temperature and pressure derivatives.

• Thermal analysisRelated: Measured heat under constant pressure is commonly interpreted as an enthalpy change.

• Chemical energyRelated: At constant pressure, its change tracks heat released or absorbed by many reactions.

• Water–gas shift reactionRelated: Its negative reaction enthalpy explains why heat is released during conversion.

• Hess's lawNarrower topic: Hess's law applies to changes in this state function.

• Flash evaporationRelated: An ideal throttling flash conserves enthalpy as pressure drops.

• Fundamental thermodynamic relationCompared with: Its natural variables replace volume with pressure, making it useful at constant pressure.

• Gibbs–Helmholtz equationRelated: At constant pressure, it supplies the energy term in the equation.

• Superheated steamRelated: Superheating raises steam’s enthalpy, which helps determine turbine work and heat requirements.

• ThermochemistryRelated: Reaction heat at constant pressure is measured as a change in this quantity.

• Endothermic processRelated: At constant pressure, an endothermic process has a positive enthalpy change.

• Exothermic processRelated: Its change is negative for an exothermic process at constant pressure.

• Crocco's theoremNarrower topic: Stagnation enthalpy extends this thermodynamic quantity by including kinetic energy.

• Germain Henri HessNarrower topic: Hess’s law concerns the enthalpy changes of chemical reactions.

• Heat pump and refrigeration cycleRelated: Refrigerant enthalpy changes quantify heat absorbed, heat rejected, and work in cycle calculations.

• Trouton's ruleNarrower topic: Vaporization enthalpy helps determine the entropy change at boiling.