## ln(A) Arrhenius Equation

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

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

### ln(A) Arrhenius Equation

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

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

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

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.