Physical Chemistry- Maxwell Boltzmann Distribution

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SUMMARY

The discussion focuses on deriving an expression for using the Maxwell-Boltzmann distribution. The key equation provided is =(8RT/piM)^1/2, which relates average velocity to temperature (T) and molar mass (M). The integration technique involves calculating the integral from 0 to infinity of v^3p(v)dv, with a suggested substitution of u=v^2 to simplify the process. This approach leads to an integral that can be expressed in terms of the gamma function.

PREREQUISITES
  • Understanding of Maxwell-Boltzmann distribution
  • Familiarity with integration techniques in calculus
  • Knowledge of the gamma function
  • Basic concepts of physical chemistry, particularly kinetic theory
NEXT STEPS
  • Study the derivation of the Maxwell-Boltzmann distribution in detail
  • Learn about the properties and applications of the gamma function
  • Explore advanced integration techniques relevant to physical chemistry
  • Review the relationship between temperature, molar mass, and molecular speed
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Students of physical chemistry, particularly those studying kinetic theory and statistical mechanics, as well as educators looking for effective teaching methods for complex integration in chemistry.

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Homework Statement



Use the maxwell Boltzmann distribution to derive an expression for <v^3>

Homework Equations


<v>=(8RT/piM)^1/2


The Attempt at a Solution


I know that you have to integrate from 0 to infinity v^3p(v)dv.. but I don't really know how to integrate this. I just need to find a general integral then I can look it up in the handbook for chemistry and physics...
 
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Use the substitution u=v2 (maybe throw in the constants while you're at it), and you'll have an integral in the form of the gamma function.
 

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