Kopp's law can refer to either of two relationships discovered by the German chemist Hermann Franz Moritz Kopp (1817–1892).
Kopp found "that the molecular heat capacity of a solid compound is the sum of the atomic heat capacities of the elements composing it; the elements having atomic heat capacities lower than those required by the Dulong–Petit law retain these lower values in their compounds."[1]
In studying organic compounds, Kopp found a regular relationship between boiling points and the number of CH2 groups present.[2]
The Kopp–Neumann law, named for Kopp and Franz Ernst Neumann, is a common approach for determining the specific heatC (in J·kg−1·K−1) of compounds using the following equation:[3]
where N is the total number of compound constituents, and Ci and fi denote the specific heat and mass fraction of the i-th constituent. This law works surprisingly well at room-temperature conditions, but poorly at elevated temperatures.[3]
kopp, refer, either, relationships, discovered, german, chemist, hermann, franz, moritz, kopp, 1817, 1892, kopp, found, that, molecular, heat, capacity, solid, compound, atomic, heat, capacities, elements, composing, elements, having, atomic, heat, capacities,. Kopp s law can refer to either of two relationships discovered by the German chemist Hermann Franz Moritz Kopp 1817 1892 Kopp found that the molecular heat capacity of a solid compound is the sum of the atomic heat capacities of the elements composing it the elements having atomic heat capacities lower than those required by the Dulong Petit law retain these lower values in their compounds 1 In studying organic compounds Kopp found a regular relationship between boiling points and the number of CH2 groups present 2 Hermann Franz Moritz Kopp Contents 1 Kopp Neumann law 2 See also 3 References 4 Further readingKopp Neumann law editThe Kopp Neumann law named for Kopp and Franz Ernst Neumann is a common approach for determining the specific heat C in J kg 1 K 1 of compounds using the following equation 3 C i 1NCifi displaystyle C sum i 1 N C i f i nbsp where N is the total number of compound constituents and Ci and fi denote the specific heat and mass fraction of the i th constituent This law works surprisingly well at room temperature conditions but poorly at elevated temperatures 3 See also editRule of mixturesReferences editFrederick Seitz The Modern Theory of Solids McGraw Hill New York USA 1940 ASIN B000OLCK08 See page 96 of Millard Earl Bowman 1921 Physical Chemistry for Colleges New York McGraw Hill p 96 Kopp s Law See page 942 of Miller William Allen 1869 Elements of Chemistry London Longmans Green Reader and Dyer a b Kauwe Steven K Graser Jake Vazquez Antonio Sparks Taylor D 2018 05 29 Machine Learning Prediction of Heat Capacity for Solid Inorganics Integrating Materials and Manufacturing Innovation 7 2 43 51 doi 10 1007 s40192 018 0108 9 ISSN 2193 9764 S2CID 65239690 Further reading editThorpe T E 1901 The Life Work of Hermann Kopp Memorial Lectures Delivered Before the Chemical Society 25 774 815 nbsp This thermodynamics related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Kopp 27s law amp oldid 1117318557, wikipedia, wiki, book, books, library,
