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Unformatted text preview: dP dt = − ° k B T V ± pA (2 πmk B T ) 1 / 2 dP dt = − ° k B T 2 πm ± 1 / 2 pA V integrating, ² P P dP ° P ° = − ° k B T 2 πm ± 1 / 2 A V ² t dt ° ln P P = − ° k B T 2 πm ± 1 / 2 A V t or P = P e − t/τ where τ = V A ° 2 πm k B T ± 1 / 2 exponential decay oF pressure with time. The halFliFe is the time it takes For the pressure to decay to halF its initial value: P 2 = P e − t 1 / 2 /τ solving For t 1 / 2 : t 1 / 2 = τ ln 2 1...
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This note was uploaded on 04/11/2010 for the course CHEM 1101 taught by Professor Leroy during the Spring '10 term at University of Toronto.
 Spring '10
 Leroy

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