Kelvin equation

From Wikipedia, the free encyclopedia

There are very few or no other articles that link to this one.
Please help introduce links in articles on related topics. After links have been created, remove this message.
This article has been tagged since November 2006.

Kelvin equation describes the change of vapour pressure over liquid curved with a radius r (for example, in a capillary or over a droplet). The Kelvin equation is used for determination of pore size distribution of a porous medium using adsorption porosimetry.

\ln {p\over p_0}= {2 \gamma V_m \over rRT}

where
p - actual vapour pressure
p0 - saturated vapour pressure
γ - surface tension
Vm - molar volume
R - universal gas constant
r - radius of the droplet
T - temperature

condensation

W. T. Thomson, Phil. Mag. 42, 448 (1871)
S. J. Gregg and K. S. W. Sing, Adsorption, Surface Area and Porosity, 2nd edition,Academic Press, New York, (1982) p.121
Adamson and Gast, Physical Chemistry of Surfaces, 6th edition, (1997) p.54

Retrieved from "http://en.wikipedia.org../../../k/e/l/Kelvin_equation.html"
Advanced Search
Included Web Search Engines


Safe Search

close

Top Matching Results

Occasionally Search.com will highlight specialized results that are based on the context of your query. Examples of specialized results include specific links to news, images, or video.

Top Matching Results may highlight information from other Search.com pages, content from the CNET Network of sites, or third party content. The listings are based purely on relevance. Search.com does not receive payment for listings in this section but our partners that provide this data may get paid for listing these products.

Sponsored Links

This section contains paid listings which have been purchased by companies that want to have their sites appear for specific search terms and related content. These listings are administered, sorted and maintained by a third party and are not endorsed by Search.com.

Search Results

Search.com sends your search query to several search engines at one time and integrates the results into one list which has been sorted by relevance using Search.com's proprietary algorithm. You can customize the list of search engines included in your metasearch from the preferences.

The search engines that are used in your metasearch may allow companies to pay to have their Web sites included within the results. To view the Paid Inclusion policy for a specific search engine, please visit their Web site. Search.com does not accept payment or share revenue with any search engine partner for listings in this section.