Calculating Fugacity of Freon-12 at 82.2C, 9.65bar

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Discussion Overview

The discussion revolves around calculating the fugacity of freon-12 at a specified temperature and pressure, specifically at 82.2°C and 9.65 bar. The participants explore methods to achieve this without relying on critical data, focusing on the applicability of various resources and equations.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks guidance on calculating the fugacity of freon-12 without critical data and expresses uncertainty about where to begin.
  • Another participant suggests using a specific website and provides an approximate calculation formula for fugacity, indicating a potential resource for finding necessary data.
  • A participant points out that the values referenced in the suggested formula are applicable to liquids, while the problem involves a gas, raising a concern about the appropriateness of the method.
  • A further reply reiterates that the values are for liquids, prompting a brief exchange questioning the relevance of the provided information.

Areas of Agreement / Disagreement

Participants express differing views on the applicability of the suggested fugacity calculation method, indicating a lack of consensus on how to proceed with the calculation for a gas.

Contextual Notes

There is an implicit assumption that critical data is not available, which may limit the methods discussed. The relevance of the suggested resources and formulas is contested, particularly regarding their applicability to gaseous states.

tabasko
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I need to find the fugacity of freon-12 (Dichlorodifluoromethane) at 82.2C and 9.65bar, using a method that does not require critical data. I'm assuming we can find any other information to solve the problem, but I not sure where to start..
 
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I suspect you should be able to find everything you need using the following website- http://webbook.nist.gov/chemistry/fluid/" , and the approximate calculation for fugacity.

\textsl{f}\approx\frac{P^2\overline{V}}{RT}

http://en.wikipedia.org/wiki/Fugacity
 
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Those values are for liquids, and in my problem, we have a gas!
 

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