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## Main Question or Discussion Point

HI

While working on some chemical kinetics problems, I came across the statement,

Is this fraction equal to the probability factor in the Arrhenius Equation? That is, is this equal to P where

[tex]k = APe^{-E_{act}/RT}[/tex]

where k = rate constant, A = frequency factor, P = probability factor, [itex]E_{act}[/itex] = activation energy and T = absolute temperature?

Or is it something else?

Thanks and cheers

vivek

While working on some chemical kinetics problems, I came across the statement,

*the fraction of activated molecules is [itex]10^{-15}[/itex]*in a problem where some other constants were also provided and the half life was to be found (for a first order reaction). My specific query is:Is this fraction equal to the probability factor in the Arrhenius Equation? That is, is this equal to P where

[tex]k = APe^{-E_{act}/RT}[/tex]

where k = rate constant, A = frequency factor, P = probability factor, [itex]E_{act}[/itex] = activation energy and T = absolute temperature?

Or is it something else?

Thanks and cheers

vivek

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