sign of k

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Abigail Urbina 1K
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sign of k

Postby Abigail Urbina 1K » Fri Mar 16, 2018 9:56 pm

Can the rate constant, k, ever be negative?
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Cristina Sarmiento 1E
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Re: sign of k

Postby Cristina Sarmiento 1E » Fri Mar 16, 2018 10:01 pm

No, rate constants can never be negative.
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Isita Tripathi 2E
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Re: sign of k

Postby Isita Tripathi 2E » Fri Mar 16, 2018 10:16 pm

It's all about the wording. For example, the rate of decomposition is positive (even though its concentration is decreasing) because it is the rate at which it is disappearing. This is why we have to take the negative of the d[A]/dt for the rate in A --> B.
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Katelyn B 2E
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Re: sign of k

Postby Katelyn B 2E » Sun Mar 18, 2018 12:16 am

Rate constants can never be negative because the rate of a reaction is always positive.
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