November 28, 2024, 11:51:52 PM
Forum Rules: Read This Before Posting


Topic: Rate constant  (Read 2074 times)

0 Members and 1 Guest are viewing this topic.

Offline Plumbum

  • Full Member
  • ****
  • Posts: 133
  • Mole Snacks: +2/-0
  • Gender: Female
Rate constant
« on: November 01, 2014, 08:54:32 AM »
I really need your help !

I wanna Calculate the rate constant of s complex. In the laboratory we have been Measuring the extinction of a complex with the photometer. Once with 22 degrees all 30 seconds and once with 10 degrees Every minute. And now I have to calculate the Half life which is easy, but I have difficulties measuring the rate constant k...please help me out here
There might be some language misunderstandings - I'm from Germany

Offline Irlanur

  • Chemist
  • Full Member
  • *
  • Posts: 423
  • Mole Snacks: +32/-4
Re: Rate constant
« Reply #1 on: November 01, 2014, 10:32:08 AM »
you can't measure the rate constant of a complex, only of reaction. how is the rate constant related to the half life? assuming a unimolecular reaction.

Offline Plumbum

  • Full Member
  • ****
  • Posts: 133
  • Mole Snacks: +2/-0
  • Gender: Female
Re: Rate constant
« Reply #2 on: November 01, 2014, 10:57:09 AM »
It's

T1/2= ln(2)/k
There might be some language misunderstandings - I'm from Germany

Sponsored Links