## How to solve with K without an A value?

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

Ishan Ayyala 2K
Posts: 31
Joined: Fri Sep 25, 2015 3:00 am

### How to solve with K without an A value?

The problem gives Ea as 125 KJ/mol, how would you solve for k to see if the reaction will occur at room temperature if no A value is given?

Jasmine Holloway 1G
Posts: 39
Joined: Fri Sep 25, 2015 3:00 am

### Re: How to solve with K without an A value?

In the organic textbook it says that a reaction will occur at room temperature if it's Ea is approximately lower than 80 kj/mol.

Jasmine Holloway 1G
Posts: 39
Joined: Fri Sep 25, 2015 3:00 am

### Re: How to solve with K without an A value?

Therefore, if its' Ea is at 125 kj/mol, then it wont occur at room temp. You don't need to calculate anything.

VictoriaRoderick_3A
Posts: 42
Joined: Fri Sep 25, 2015 3:00 am

### Re: How to solve with K without an A value?

When you write out the division problem, the A's should cancel out.