Activation energy

Arrhenius Equation:

Moderators: Chem_Mod, Chem_Admin

Blake_Katsev_2E
Posts: 113
Joined: Wed Sep 21, 2016 2:57 pm

Activation energy

Postby Blake_Katsev_2E » Wed Feb 22, 2017 5:02 pm

why would raising temperature affect k more rather than k' if the activation energy of k is higher?

AndrewM2G
Posts: 9
Joined: Fri Jul 22, 2016 3:00 am

Re: Activation energy

Postby AndrewM2G » Wed Feb 22, 2017 7:26 pm

The reaction with the higher activation energy essentially requires more ambient energy to initiate the reaction. Changing the temperature means changing the amount of ambient energy, so a rxn with a high activation energy is initiated more easily when there is ample energy (higher temp). A rxn with a lower activation energy will not change as much because it doesn't require as much energy to initiate, so the temp change is less significant.

Blake_Katsev_2E
Posts: 113
Joined: Wed Sep 21, 2016 2:57 pm

Re: Activation energy

Postby Blake_Katsev_2E » Wed Feb 22, 2017 9:24 pm

so would that mean when the energy of products is less, raising the temperature would always lower K?

breinhardt3G
Posts: 10
Joined: Wed Sep 21, 2016 2:56 pm

Re: Activation energy

Postby breinhardt3G » Wed Feb 22, 2017 10:05 pm

No, it just means that an increase in temperature won't raise k as much because not as much heat is required to overcome the lower Ea.


Return to “Arrhenius Equation, Activation Energies, Catalysts”

Who is online

Users browsing this forum: No registered users and 1 guest