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Topic: Kinetics - constant rate - ln time versus ln concentration  (Read 8617 times)

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Offline CB

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Kinetics - constant rate - ln time versus ln concentration
« on: June 14, 2007, 12:39:41 PM »
Hello,

Is there any constant rate in kinetics that could be expressed as ln time vs. ln concentration.

I have diffciculties to find the rate of my experiments >:(. I measured the concentration of the products vs the time.

No order fit as far as I know, but I have very good staight line when I plot ln time versus ln concentration

Does anyone know how I could translate this correlation between ln time vs. ln concentration to the rate of my reaction?

Thanks
Regards


Offline Yggdrasil

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Re: Kinetics - constant rate - ln time versus ln concentration
« Reply #1 on: June 14, 2007, 01:52:06 PM »
If ln(time) v. ln(concentration) is a straight line, then time v. concentration should be a straight line.

Offline CB

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Re: Kinetics - constant rate - ln time versus ln concentration
« Reply #2 on: June 15, 2007, 03:56:00 AM »
No , time versus concentration follow a logarithmic curve....but the kinetic order is not 0 1 or 2, even 3....
But only ln(time) vs ls (concentration) gives a straight line. ???

In this kinetic I can only used the product formed.

Is there any link between order and ln(t) ln(C)?

Regards

Offline Borek

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Re: Kinetics - constant rate - ln time versus ln concentration
« Reply #3 on: June 15, 2007, 08:22:31 AM »
But only ln(time) vs ls (concentration) gives a straight line. ???

Artifact IMHO.
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