## Ea and rate constant

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

kshalbi
Posts: 68
Joined: Fri Sep 25, 2015 3:00 am

### Ea and rate constant

When an enzyme lowers the Ea and causes the reaction to speed up, is it also lowering k or just lowering the activation energy. Or is activation energy calculated into k?

Franca Park 3J
Posts: 64
Joined: Fri Sep 25, 2015 3:00 am

### Re: Ea and rate constant

an enzyme only lowers the activation energy. since the activation energy is being lowered, the reaction happens faster therefore k (the rate) would increase

veeksha25
Posts: 29
Joined: Wed Sep 21, 2016 2:56 pm

### Re: Ea and rate constant

I've been a little confused on what k can be affected by because it is a constant. Is it affected by temperature, concentrations, and catalysts? Or are there more factors besides this?

Malavika_Theophil_3H
Posts: 13
Joined: Wed Sep 21, 2016 2:59 pm

### Re: Ea and rate constant

Increasing the number of catalysts may not increase the rate constant.