Edition 6 15.23

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Christine Chen 1H
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Joined: Fri Sep 28, 2018 12:18 am

Edition 6 15.23

Postby Christine Chen 1H » Thu Mar 14, 2019 6:06 pm

For part c, isn't it second-order and not first-order? Bc 2A --> B + C ; k = [A]^2 ?
Screen Shot 2019-03-14 at 6.05.44 PM.png

Anand Narayan 1G
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Joined: Fri Sep 28, 2018 12:15 am

Re: Edition 6 15.23

Postby Anand Narayan 1G » Thu Mar 14, 2019 7:54 pm

It is a second order reaction, Im pretty sure that's a typo for that problem as in 15.39 they mention the same equation (2A --> B + C) and call it a second-order reaction

Posts: 61
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Re: Edition 6 15.23

Postby timothy_ho_4B » Thu Mar 14, 2019 9:40 pm

Actually, I believe that the coefficients don't necessarily determine the order of the entire reaction because it ultimately boils down to the experimental analysis of initial rates to find the order (unless it is already given). The coefficient rule applies to elementary steps but not if the question is regarding the entire reaction. So the reaction can be 2A --> B + C can be zero, first, or second order, but we can't really tell unless we have experimental values.

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