- #1
mycotheology
- 89
- 0
I'm reading about how the chemistry kinetics equations are derived and here's something I don't get. How does this:
http://www.uni-regensburg.de/Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/Grafik/ord1-6.gif
get turned into this:
[itex][A] = [A]_{0}*e^{-kt}[/itex]?
When I try to derive it, I first get this:
[itex]ln[A] - ln[A]_{0} = -kt[/itex].
Then I isolate ln[A] and get:
[itex]ln[A] = ln[A]_{0} - kt[/itex]
then I reverse the ln on both sides of the equation and get:
[itex][A] = [A]_{0} - e^{-kt}[/itex].
I don't understand how the two terms end up multiplied rather than subtracted.
http://www.uni-regensburg.de/Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/Grafik/ord1-6.gif
get turned into this:
[itex][A] = [A]_{0}*e^{-kt}[/itex]?
When I try to derive it, I first get this:
[itex]ln[A] - ln[A]_{0} = -kt[/itex].
Then I isolate ln[A] and get:
[itex]ln[A] = ln[A]_{0} - kt[/itex]
then I reverse the ln on both sides of the equation and get:
[itex][A] = [A]_{0} - e^{-kt}[/itex].
I don't understand how the two terms end up multiplied rather than subtracted.