Frequency factor A


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Emma Li 2C
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Frequency factor A

Postby Emma Li 2C » Tue Mar 13, 2018 11:04 pm

In collisions, what is the frequency factor A?

Thank you!
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Jasmine Wu 1L
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Re: Frequency factor A

Postby Jasmine Wu 1L » Tue Mar 13, 2018 11:20 pm

A is the pre-exponential factor and it represents the frequency of collisions between the molecules in correct orientation. It is the constant obtained from the y-intercept in an Arrhenius plot. The Arrhenius plot is a graph of ln k against 1/T.
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