|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
27 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Molecular association at the microscopic level | | Richard M. Neumann
; | | Date: |
12 Mar 2005 | | Subject: | Soft Condensed Matter; Statistical Mechanics | cond-mat.soft cond-mat.stat-mech | | Abstract: | The Helmholtz free-energy W is calculated as a function of separation distance for two molecules in a fluid, A and B, whose mutual interaction is described by a spherically symmetric potential. For the equilibrium A + B = AB occurring in a dilute solution or gas, W is used to evaluate the association constant K, which for ionic A and B is identical to the Bjerrum result. The criterion defining the bound species is not arbitrary; i.e., the cutoff separation distance in the configuration integral used to calculate K arises directly from the definition of W. For a one-component dense fluid, W permits the derivation of the phase-condensation temperature, which for a gas is the critical temperature and for a liquid the freezing temperature. For ionic A and B (e.g., Sodium and Chloride ions in molten NaCl), an expression for the freezing temperature is obtained, which is similar to the expression for the melting temperature derived by Kosterlitz and Thouless for two-dimensional systems. | | Source: | arXiv, cond-mat/0503310 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER