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Topic: rate of reaction constant (k)  (Read 2478 times)

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Offline liamshaw01

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rate of reaction constant (k)
« on: April 21, 2012, 03:40:10 AM »
Hey guys,

Just wondering what the difference is between k1, k2, and k3 (the 1,2,3 are subscripts), when k is the rate of reaction constant.

Cheers!
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Offline Ari Ben Canaan

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Re: rate of reaction constant (k)
« Reply #1 on: April 21, 2012, 05:02:13 AM »
Without reading the actual question it might just be the rate constants at different temperatures.
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Offline fledarmus

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Re: rate of reaction constant (k)
« Reply #2 on: April 21, 2012, 12:58:27 PM »
Those are also used if you are considering multi-step reactions or mechanisms - k1 might be the rate of the first step, k2 for the second, etc.

There is no standard usage that I know of - it depends on the context in which it is being used.
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Offline juanrga

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Re: rate of reaction constant (k)
« Reply #3 on: April 21, 2012, 03:10:58 PM »
Quote from: liamshaw01 on April 21, 2012, 03:40:10 AM
Hey guys,

Just wondering what the difference is between k1, k2, and k3 (the 1,2,3 are subscripts), when k is the rate of reaction constant.

Cheers!

It can also mean the constants when there is not catalyst present or when there is one or other.
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