Chemical Forums
1 Hour
1 Day
1 Week
1 Month
Forever
February 16, 2025, 04:15:40 PM
Forum Rules
: Read This Before Posting
Home
Help
Search
Login
Register
Chemical Forums
Chemistry Forums for Students
Physical Chemistry Forum
Units of arrhenius' equation
« previous
next »
Print
Pages: [
1
]
Go Down
Topic: Units of arrhenius' equation (Read 38029 times)
0 Members and 1 Guest are viewing this topic.
nokia8650
Regular Member
Posts: 19
Mole Snacks: +0/-0
Units of arrhenius' equation
«
on:
February 05, 2008, 01:55:42 PM »
In arrhenius' equation, given the units of the rate constant, how does onework out the units of A, the frequency factor? Ea is in J/Mol, R is in J/K/Mol, and T is in K.
Also, please can you give an example of finding the units of A!
Thanks
Logged
Yggdrasil
Retired Staff
Sr. Member
Posts: 3215
Mole Snacks: +485/-21
Gender:
Physical Biochemist
Re: Units of arrhenius' equation
«
Reply #1 on:
February 05, 2008, 08:36:05 PM »
Arrhenius' equation states that:
k = Ae
-Ea/RT
Note that Ea has units of energy and RT also has units of energy, so the exponential is a dimensionless quantity. This means that A has the same units as k. The units of k depend on the particular rate law of the reaction you're studying.
Logged
Print
Pages: [
1
]
Go Up
« previous
next »
Sponsored Links
Chemical Forums
Chemistry Forums for Students
Physical Chemistry Forum
Units of arrhenius' equation