“Kopp's law”的意思、由来-开放百科全书

词条

Kopp's law

释义

Kopp–Neumann law
See also
References
Further reading

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."^&91;1&93;
In studying organic compounds, Kopp found a regular relationship between boiling points and the number of CH₂ groups present.^&91;2&93;

Kopp–Neumann law

The Kopp–Neumann law, named for Kopp and Franz Ernst Neumann, states that the specific heat C per unit mass (in J·kg⁻¹·K⁻¹) for alloys can be calculated from the following equation:

,

where N is the total number of alloy constituents, and C_i and f_i denote the specific heat and mass fraction of the i-th constituent.

References

Frederick Seitz, The Modern Theory of Solids, McGraw-Hill, New York, USA, 1940, ASIN: B000OLCK08

1. ^See page 96 of {{cite book | title = Physical Chemistry for Colleges | author = Millard, Earl Bowman | year = 1921 | publisher = McGraw-Hill| location = New York | url = https://books.google.com/books?id=oYE6AAAAMAAJ&pg=PA96&dq=Kopp%27s+Law}}
2. ^See page 942 of {{cite book | title = Elements of Chemistry | author = Miller, William Allen | year = 1869| publisher = Longmans, Green, Reader, and Dyer | location = London | url = https://books.google.com/books?id=b7ktAAAAYAAJ&pg=PA942&dq=Kopp%27s+law }}

Kopp–Neumann law

See also

References

Further reading