Heres the question:(adsbygoogle = window.adsbygoogle || []).push({});

http://img215.imageshack.us/img215/1185/screenshot5xq.png [Broken]

Kinetics is probably my weakest area in chemistry so I'm struggling. To find the shelf life, I need to use the Arrhenius equation but I don't know the activation energy Ea or the A constant. So I converted 2 those percentages into rates and got:

At 40C, rate = 0.082 %/month

At 60C, rate = 0.39 %/month

I know that if I plot 1/T vs. lnk, I get an Arrhenius plot and then I can find Ea from the slope and A from the y-intercept but I don't have k. Can I just use the rates that I have instead of k?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Using an Arrhenius plot

**Physics Forums | Science Articles, Homework Help, Discussion**