Word.ws English Dictionary

Hess's law

Hess's law proper noun: a relationship in physical chemistry stating that the total enthalpy change during the complete course of a reaction is the same whether the reaction is made in one step or in several steps.

Proper noun

Hess's law

  1. A relationship in physical chemistry stating that the total enthalpy change during the complete course of a reaction is the same whether the reaction is made in one step or in several steps.

Origin of Hess's law

Named after Swiss-Russian chemist Germain Henri Hess, who published it in 1840.

Questions about Hess's law

What does Hess's law mean?
Hess's law means a relationship in physical chemistry stating that the total enthalpy change during the complete course of a reaction is the same whether the reaction is made in one step or in several steps.
What part of speech is Hess's law?
Hess's law is a proper noun.

Words near Hess's law in the dictionary

  1. hesperornithines
  2. Hesperus
  3. hesps
  4. Hesquiaht
  5. Hess
  6. Hess's law
  7. Hessay
  8. Hessdalen light
  9. Hessdalen lights
  10. Hesse
  11. Hesse-Cassel

Source and license

Adapted from Wiktionary: Hess's law (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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