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Topic: Van der waals equation?  (Read 2096 times)

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Offline Mr.A

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Van der waals equation?
« on: February 18, 2013, 10:35:56 PM »
1. what is meant by 'The van der Waals equation is a cubic equation of state' ?

2. when changing this to the reduced form what is the significance of turning this into a cubic equation of volume?

3. why is fair to right it as (V-Vc)^3 ?   :o

plzz *help me*!
« Last Edit: February 18, 2013, 11:21:20 PM by Mr.A »
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Offline Dan

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Re: Van der waals equation?
« Reply #1 on: February 19, 2013, 02:55:09 AM »
You must show you have attempted the question, this is a Forum Rule.
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Offline AWK

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Re: Van der waals equation?
« Reply #2 on: February 19, 2013, 03:02:57 AM »
Quote from: Mr.A on February 18, 2013, 10:35:56 PM
1. what is meant by 'The van der Waals equation is a cubic equation of state' ?

2. when changing this to the reduced form what is the significance of turning this into a cubic equation of volume?

Rearrange both equations into polynomial forms and you will got answers
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Offline Borek

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Re: Van der waals equation?
« Reply #3 on: February 19, 2013, 04:21:42 AM »
First things first - what is a "cubic equation"?
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