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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: paui on March 03, 2009, 09:04:56 AM

Title: Pre-exponential factor A
Post by: paui on March 03, 2009, 09:04:56 AM

Hi everyone!

I was kinda wondering... what are pre exponential factors? Do i get a direct literature value for this?
I have some difficulty answering my chemistry problem because i need a value for A.

The reaction is:

NH4NO3 + H2O(l)  :rarrow: N2O + H2O(v)

thanks a lot in advance...  ;D

Title: Re: Pre-exponential factor A
Post by: Astrokel on March 03, 2009, 10:33:31 AM

You could check the definition of pre-exponential factor online. Do you have any source to get value of A for your reaction? If no, what is your full question? Usually it could be determine via arrhenius plot.