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Topic: Determining reaction order using half-life  (Read 1937 times)

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Offline Rutherford

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Determining reaction order using half-life
« on: May 03, 2014, 04:44:18 AM »
I found this statement:
The reaction order can be determined by measuring the half-life as a function of the concentrations of the reacting species.

How is that true? Isn't the half life independent of concentration?
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Offline Borek

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Re: Determining reaction order using half-life
« Reply #1 on: May 03, 2014, 05:36:01 AM »
Quote from: Raderford on May 03, 2014, 04:44:18 AM
Isn't the half life independent of concentration?

Only for the exponential decay (which is equivalent to the first order reaction).

Compare http://en.wikipedia.org/wiki/Rate_equation
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Offline Rutherford

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Re: Determining reaction order using half-life
« Reply #2 on: May 03, 2014, 08:14:15 AM »
Right. Thank you.
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