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Old Sep 10th 2017, 08:46 PM   #1
abhistud
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Shouldn't K be different?

This is the question:



This is how he did it:

Then, he said that if K is equal in both the cases, then, it is first order. But, shouldn't K vary with time in first order reaction?
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Old Sep 23rd 2017, 06:11 AM   #2
chemtopper
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What is k?
It is the rate constant and it can be changed only changing the temperature for a given reaction.
If reaction is carried out at the same temperature then value of k is constant.
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