Slope of k

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Ashley Van Belle 2B
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Slope of k

Postby Ashley Van Belle 2B » Mon Feb 20, 2017 3:37 pm

Why do the zero order and first order reactions have a negative slope, while the second order has a positive slope? Will we need to know how to derive these formulas as well?

Monica Habashy 3A
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Re: Slope of k

Postby Monica Habashy 3A » Mon Feb 20, 2017 4:46 pm

Second order reactions are 1/A vs time therefore the slope increases as concentration decreases which is why the slop for that is positive.

Kathy Vu 3L
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Re: Slope of k

Postby Kathy Vu 3L » Mon Feb 20, 2017 6:17 pm

When you derive the equation for a zero and first order reactions by integrating, it comes out to be -kt, as opposed to integrating the second order reaction and having it come out to be kt. Therefore the slope is negative for zero and first order.

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Re: Slope of k

Postby Katherine_Zhuo_3B » Fri Feb 24, 2017 5:54 pm

For zero and first order reactions, the slope = -k. For second order reactions, the slope = +k.

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