What is 'A'?

Arrhenius Equation:

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AlyssaYeh_1B
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Joined: Sat Aug 17, 2019 12:16 am

What is 'A'?

Postby AlyssaYeh_1B » Sat Mar 07, 2020 9:22 am

In my notes, 'A' is defined as the frequency factor or pre-exponential factor (including # of collisions with correct orientation). What does this mean? Is this what we're trying to calculate with the Arrhenius equation?

Fiona Latifi 1A
Posts: 102
Joined: Sat Sep 14, 2019 12:16 am

Re: What is 'A'?

Postby Fiona Latifi 1A » Sat Mar 07, 2020 10:49 am

With the Arrhenius equation, we are trying to calculate K, the equilibrium constant.

Luyan Zhang - 2D
Posts: 103
Joined: Sat Jul 20, 2019 12:16 am

Re: What is 'A'?

Postby Luyan Zhang - 2D » Sat Mar 07, 2020 11:41 am

A is a constant: it is the fraction of molecules that make collisions which are significant to the chemical equation.

Matt F
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Joined: Sat Aug 17, 2019 12:17 am

Re: What is 'A'?

Postby Matt F » Sun Mar 08, 2020 3:31 pm

So A will always be given for a reaction?

MinuChoi
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Joined: Wed Sep 18, 2019 12:15 am

Re: What is 'A'?

Postby MinuChoi » Sun Mar 08, 2020 3:34 pm

A is a unique constant for a chemical reaction, similar to the k constant of a reaction.

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

Re: What is 'A'?

Postby vibha gurunathan 1h » Wed Mar 11, 2020 9:47 pm

AlyssaYeh_1B wrote:In my notes, 'A' is defined as the frequency factor or pre-exponential factor (including # of collisions with correct orientation). What does this mean? Is this what we're trying to calculate with the Arrhenius equation?


I'm pretty sure it's given. From what I remember in class, Dr. Lavelle said it was angular dependence but we don't have to calculate it.


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