ln(A) Arrhenius Equation

Arrhenius Equation:

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Haley Dveirin 1E
Posts: 101
Joined: Sat Jul 20, 2019 12:17 am

ln(A) Arrhenius Equation

Postby Haley Dveirin 1E » Mon Mar 09, 2020 8:50 pm

How do you find what A is in the term ln(A) in the Arrhenius equation. Like if you are using the Arrhenius equation to solve for Ea or K how do you know what to plug in for ln(A)? Is there some sort of table that has A values for different runs in the book? Or do we solve for that algebraically?

chemboi
Posts: 101
Joined: Sat Jul 20, 2019 12:16 am

Re: ln(A) Arrhenius Equation

Postby chemboi » Mon Mar 09, 2020 9:31 pm

In a situation where you'd be solving 1 equation with 2 unknowns without knowing A, I'd think the problem would say the value.

Sally Qiu 2E
Posts: 105
Joined: Fri Aug 30, 2019 12:18 am

Re: ln(A) Arrhenius Equation

Postby Sally Qiu 2E » Mon Mar 09, 2020 9:32 pm

i think Lavelle said we aren't going to learn how to calculate an actual value for A; just understand what it represents and why it's significant

Subashni Rajiv 1K
Posts: 101
Joined: Wed Sep 18, 2019 12:16 am

Re: ln(A) Arrhenius Equation

Postby Subashni Rajiv 1K » Mon Mar 09, 2020 9:58 pm

As long as you understand the Arrhenius Equation and why it's used, you should be fine. You would be given A or asked to solve for it given the other values.


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