## Activation Energy

Arrhenius Equation: $\ln k = - \frac{E_{a}}{RT} + \ln A$

Rhea Shah 2F
Posts: 97
Joined: Thu Jul 25, 2019 12:17 am

### Activation Energy

How do you figure out the rate of a reaction based on the graphs of the activation energy?

Daniel Yu 1E
Posts: 100
Joined: Sat Aug 24, 2019 12:15 am

### Re: Activation Energy

The higher the activation energy, the lower the reaction rate, as a general rule.

Ashley Nguyen 2L
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Been upvoted: 1 time

### Re: Activation Energy

Normally if the activation energy is higher, the reaction rate is slower because it requires more energy.

Chris Tai 1B
Posts: 102
Joined: Sat Aug 24, 2019 12:16 am

### Re: Activation Energy

Catalysts can also be used to affect the activation energy that a reaction needs to proceed by lowering such activation energy. This is independent of the reaction and the catalyst is not consumed in the reaction itself.

Tauhid Islam- 1H
Posts: 64
Joined: Fri Aug 02, 2019 12:15 am

### Re: Activation Energy

If you have a higher activation energy, more energy will be needed to move the products past that activation energy hump, and because you need more energy, you can assume that inorder for the reaction to progress, you are going to need more time to get past that activation energy if it was higher rather than if it was lower. Therefore, the higher the activation energy the lower the rate of the reaction.