Van der Waal's equation of state

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Homework Help Overview

The discussion revolves around Van der Waals' equation of state, which is a modification of the ideal gas law intended to account for the behavior of real gases. Participants are exploring the discrepancies between the theoretical predictions of the equation and experimental observations, seeking ways to reconcile these differences.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the need for reconciliation of Van der Waals' equation with experimental data and are asking for clarification on the specific experimental observations that highlight the shortcomings of the equation. There is also a request for suggestions on how to address these discrepancies.

Discussion Status

The discussion is ongoing, with some participants providing definitions and context for Van der Waals' equation while others are seeking more information about the experimental results that necessitate reconciliation. There is a mix of attempts to clarify concepts and explore potential approaches to the problem.

Contextual Notes

Some participants note that the terms in Van der Waals' equation are approximations and that the equation may not fully capture the behavior of real gases, indicating a need for further exploration of these limitations.

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Help me on this one - Van der Waal's equation of state

suggest ways of reconciling Van der Waal's equation of state with experimental observations
 
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Do you know what Van der Waal's equation is? What are the experimental observations and why should Van der Waal's equation need "reconciling".

In other words, show us what you know about this question so we can help you!
 
Vander Waal's equation is given as (P+A/v2)(v-b) = RT which is an approximate theoretical treatment. The molecules are treated as hard attracting spheres and the term a/v2 arises from the intermoleculer attractions. Both a/v2 and b are first approximations only and were used to give 1st order derivations from the ideal gas law.
As compared to experimantal results, the VDW equation of state comes short.I would like to suggestions of how to overcome these short comings so as to be able to reconcile the equation with the experimental results.
 
Vander Waal's equation is given as (P+A/v2)(v-b) = RT which is an approximate theoretical treatment. The molecules are treated as hard attracting spheres and the term a/v2 arises from the intermoleculer attractions. Both a/v2 and b are first approximations only and were used to give 1st order derivations from the ideal gas law. PV=NRT
As compared to experimantal results, the VDW equation of state comes short.I would like to suggestions of how to overcome these short comings so as to be able to reconcile the equation with the experimental results.
 

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