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A Mereological Interpretation of the Phase Rule

Published online by Cambridge University Press:  01 January 2022

Abstract

Gibbs's phase rule treats mixtures by relating the number of independent variables governing their state to the numbers of phases and independent substances. For the case of a single substance, it provides a criterion of purity. But where more substances are involved, the notion of independent substance is less readily understood. Textbook writers sometimes use algebraic terminology in ways that are suggestive but cannot be taken as literally accurate. I suggest that a mereological interpretation applies to these cases, as it captures more concisely the insights underlying the use of algebraic terminology and illuminates the general notion of substance.

Type
Research Article
Copyright
Copyright © The Philosophy of Science Association

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Footnotes

I would like to thank Robert Deltete and Krishna Vemulapalli for helpful comments on an earlier version of this article.

References

Bowden, S. T. 1938. “A Modified Phase Rule Equation.” Nature 141:331.10.1038/141331a0CrossRefGoogle Scholar
Bowden, S. T.. 1960. The Phase Rule and Phase Reactions. London: Macmillan.Google Scholar
Castellan, Gilbert W. 1964. Physical Chemistry. Reading, MA: Addison-Wesley.Google Scholar
Needham, Paul. 2002. “The Discovery That Water Is H2O.” International Studies in the Philosophy of Science 16:205–26.10.1080/0269859022000013300CrossRefGoogle Scholar
Needham, Paul. 2007. “Macroscopic Mixtures.” Journal of Philosophy 104:2652.10.5840/jphil2007104136CrossRefGoogle Scholar
Ricci, John Ettore. 1951. The Phase Rule and Heterogeneous Equilibrium. Toronto: Van Nostrand.Google Scholar