Germain Hess

Germain Hess nsIn chemistry, Germain Henri Hess (1802-1850) was a Swiss-born Russian chemist noted for his 1840 article “Constant Heat Sums” (Constanz der Warmesummen) in which Hess’ law, which states that heats of reactions in successive reactions must be added, was established. [1] German physical chemist Wilhelm Ostwald cites Hess, through his 1840 work, as being the founder of thermo-chemistry. [2]

References
1. Muller, Ingo. (2007). A History of Thermodynamics - the Doctrine of Energy and Entropy (pg. 154-55). New York: Springer.
2. Meyer, Ernst von. (1898). A History of Chemistry from the Earliest Times to the Present Day. (pg. 507 cites that Ostwald refers to G. H. Hess, and his 1840 work, Constanz der Warmesummen, as being the founder of thermo-chemistry). The Macmillan Company.

External links
Germain Hess – Wikipedia.

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