Integrating the first order rate law

  • Thread starter kasse
  • Start date
  • #1
kasse
382
1
-d[A]/dt = k[A]

- Int( d[A]/[A]) = Int (k dt)

- ( ln[A] + ln[A0] ) = kt

ln[A] = -kt - ln[A0]


Where am I wrong?
 

Answers and Replies

  • #2
epenguin
Homework Helper
Gold Member
3,959
996
- ( ln[A] - ln[A0] ) = kt
 
  • #3
kasse
382
1
Why "-"?
 
  • #4
DavidWhitbeck
351
1
It's always final - initial when doing integrals i.e.

[tex]F(b) - F(a) = \int_{a}^{b} f(x) dx[/tex]

and not +.
 

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