## lnA

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

Mallika Singh 1G
Posts: 99
Joined: Sat Aug 24, 2019 12:16 am

### lnA

where exactly does lnA come from? I understand where all the other constants/variables come from, but not sure about this one.

Ipsita Srinivas 1K
Posts: 50
Joined: Mon Jun 17, 2019 7:24 am

### Re: lnA

ln(A.e-Ea/RT) = ln (A)+ln(e-Ea/RT.
This is because ln(x.y)=ln(x)+ln(y).

Goyama_2A
Posts: 107
Joined: Sat Aug 24, 2019 12:17 am

### Re: lnA

ln A is based upon the variable A, which is called the pre-exponential factor. The pre-exponential factor represents the frequency of collisions between reactant molecules in a particular reaction.

Edmund Zhi 2B
Posts: 118
Joined: Sat Jul 20, 2019 12:16 am

### Re: lnA

A lot of questions don't give us the value of A how do we go about calculating it or is it not necessary?