## Arrhenius Equation

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

005290099
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### Arrhenius Equation

I wasn't in class for the Arrhenius equation part and I was wondering if someone could explain it to me?

MingdaH 3B
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Joined: Thu Jul 11, 2019 12:17 am

### Re: Arrhenius Equation

The Arrhenius equation basically just relates the rate constant to temperature and the activation energy of the reaction.

Jared_Yuge
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### Re: Arrhenius Equation

More specifically the Arrhenius equation can show us the impact of temperature, a catalyst, energy barrier, and frequency and orientation of collisions, which are all not shown in the rate law.

Dina Marchenko 2J
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Joined: Thu Jul 25, 2019 12:16 am

### Re: Arrhenius Equation

k=A*e^-Ea/RT

This formula helps determine the temperature dependence of reaction rates.
k is the reaction rate of the reaction.
A is a pre-exponential factor and has to do with the collision of the molecule (and if it is properly oriented when it collides in order to react)
Ea is the activation energy, or the energy input needed to activate the reaction
R is the gas constant
T is the temperature in kelvin

Given the information provided for you, you can find any of these unknown variables.

Sidharth D 1E
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### Re: Arrhenius Equation

To expand on that, reactions that give a straight line when lnkr is plotted against 1/T are said to show Arrhenius behavior

Joowon Seo 3A
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### Re: Arrhenius Equation

The equation helps us relate temperature, reaction constant, and the activation energy. IF plotting lnk to 1/T the slope is -Ea/R

kevinolvera1j
Posts: 103
Joined: Fri Aug 02, 2019 12:15 am

### Re: Arrhenius Equation

Dina Marchenko 2J wrote:k=A*e^-Ea/RT

This formula helps determine the temperature dependence of reaction rates.
k is the reaction rate of the reaction.
A is a pre-exponential factor and has to do with the collision of the molecule (and if it is properly oriented when it collides in order to react)
Ea is the activation energy, or the energy input needed to activate the reaction
R is the gas constant
T is the temperature in kelvin

Given the information provided for you, you can find any of these unknown variables.

How can you distinguish between A, the pre exponential factor, and A, the reactant such as in [A]?

vibha gurunathan 1h
Posts: 51
Joined: Mon Oct 07, 2019 12:15 am

### Re: Arrhenius Equation

Sidharth D 1E wrote:To expand on that, reactions that give a straight line when lnkr is plotted against 1/T are said to show Arrhenius behavior

What is arrhenius behavior?