2nd order


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Raquel Ruiz 1K
Posts: 30
Joined: Tue Nov 14, 2017 3:02 am

2nd order

Postby Raquel Ruiz 1K » Sun Mar 10, 2019 10:18 pm

Can someone explain why a second order graph has a positive slope? Does this mean that the concentration is increasing?
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Ashley Kim
Posts: 62
Joined: Fri Sep 28, 2018 12:19 am
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Re: 2nd order

Postby Ashley Kim » Mon Mar 11, 2019 1:08 am

The second order graph has nothing to do with the concentration, but rather the second derivative.
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Maya_Peterson1C
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: 2nd order

Postby Maya_Peterson1C » Mon Mar 11, 2019 2:16 am

The y-axis is the inverse of the concentration of A. Thus, the slope shows that as time increases, the inverse of [A] increases (not [A] itself).
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Priscilla Okaiteye
Posts: 61
Joined: Tue Nov 21, 2017 3:02 am

Half-life qraphs

Postby Priscilla Okaiteye » Mon Mar 11, 2019 2:33 am

Do we also have to know or study the graphs for half-life?
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Nicolle Fernandez 1E
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Joined: Fri Sep 28, 2018 12:25 am
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Re: 2nd order

Postby Nicolle Fernandez 1E » Mon Mar 11, 2019 4:10 pm

Since the graph is 1/A v time and when you integrate that you'll get 1/[A] = kt + 1/[A]o, and when you plot 1/[A] against t you'll get a positive slope because k is positive
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