Energy vs Reaction Progress Curve and temperature

Arrhenius Equation:

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Jamie Kao 3D
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Energy vs Reaction Progress Curve and temperature

Postby Jamie Kao 3D » Tue Feb 24, 2015 11:12 pm

How does a change in temperature effect the energy vs Reaction Progress Curve?

Chem_Mod
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Re: Energy vs Reaction Progress Curve and temperature

Postby Chem_Mod » Tue Feb 24, 2015 11:28 pm

Increasing the temperature causes more particles on average to attain the Activation Energy. However it does not change the value of the Activation Energy or the pathway of the reaction profile at all.

So though the reaction progress curve stays the same shape, the "travelling" along the curve will be faster (increase T) or slower (decrease T).

Justin Le 2I
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Re: Energy vs Reaction Progress Curve and temperature

Postby Justin Le 2I » Wed Feb 25, 2015 1:50 am

Also, the increase in temperature will have a bigger impact on the larger activation energy. So if you have a reaction profile of an exothermic reaction, the activation energy of the reverse reaction will be more responsive to the temperature increase.

Amy Luong 1L
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Re: Energy vs Reaction Progress Curve and temperature

Postby Amy Luong 1L » Fri Feb 27, 2015 9:48 am

You can also think of it as T increases, it will thus speed up the reaction (causing more collisions) and increasing k, the magnitude of the rate constant as well.


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