Kinetics with Pressure: Explanation & Derivation

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SUMMARY

The discussion centers on the derivation of pressure kinetics in the context of first-order reactions, specifically under isothermal conditions. Participants clarify that for a reaction where one molecule of A produces one molecule of B, there is no change in pressure over time. The formula referenced relates to the pressure at the start (P0) and its behavior as time approaches infinity (t = ∞). The conversation emphasizes the simplicity of the kinetics involved, dismissing the need for complex derivations.

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  • Understanding of first-order reaction kinetics
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  • Basic knowledge of chemical reaction equations
  • Concept of pressure changes in chemical reactions
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sidt36
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This post is not about a homework problem but about a derivation
When i was flipping through a physical chemistry book I found a formula which looked like
Capture4.PNG

How ever I am clueless to what it is

Can anyone explain what it is for
And possibly Derive it

Thank you
 
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Flipping, eh ?
Google first order reaction rate
 
This must be for an isothermal reaction.

In which case, when n = 1, if the pressure is P0 at the start what is it at t = ∞ ?

The pressure kinetics is exceptionally easy, not to say degenerate. :oldlaugh:
 
I don't know why I am that dumb but i haven't been able to derive it at all
 
Maybe you are looking for something too clever or complicated.

If all the chemical reaction is one molecule of A producing one of B, then there is just no change of pressure.
 

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