speed of reaction based on activation energy
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 59
- Joined: Fri Sep 28, 2018 12:28 am
speed of reaction based on activation energy
If a reaction has a higher activation energy, does this mean that the reaction is slower?
-
- Posts: 60
- Joined: Fri Sep 28, 2018 12:17 am
- Been upvoted: 1 time
Re: speed of reaction based on activation energy
Yes, generally. This is because the reaction will require a greater buildup of heat in order to reach the energy of its transition state.
-
- Posts: 32
- Joined: Wed Oct 03, 2018 12:15 am
Re: speed of reaction based on activation energy
It is because since you need more energy to build up, the longer it takes to acquire the energy for the reaction to take place.
-
- Posts: 62
- Joined: Fri Sep 28, 2018 12:16 am
Re: speed of reaction based on activation energy
Typically this is the case. To have a reaction occur, you have to meet a set amount of energy (the activation energy) to have a reaction proceed. Typically the higher the activation energy is, the more energy will be needed to be put into the system.
Re: speed of reaction based on activation energy
Yes, because more energy is necessary in order for the reaction to move forward.
-
- Posts: 63
- Joined: Fri Sep 28, 2018 12:16 am
Re: speed of reaction based on activation energy
Yes. To add on that, when adding catalyst, you increase the rate of reaction because the activation energy barrier is lowered so that the reaction can proceed faster.
-
- Posts: 60
- Joined: Fri Sep 28, 2018 12:19 am
Re: speed of reaction based on activation energy
Typically yes because the reaction will require a greater buildup of energy to overcome the activation barrier. Take a look at the Arrhenius Equation:
k = Ae^-(EA/RT)
A higher activation energy would result in a slower reaction.
k = Ae^-(EA/RT)
A higher activation energy would result in a slower reaction.
Return to “Kinetics vs. Thermodynamics Controlling a Reaction”
Who is online
Users browsing this forum: No registered users and 5 guests