Threshold and activation energy

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205389184
Posts: 85
Joined: Sat Sep 07, 2019 12:18 am

Threshold and activation energy

Postby 205389184 » Sun Oct 13, 2019 11:31 pm

Why is the threshold energy greater than the activation energy?

Maya Pakulski 1D
Posts: 88
Joined: Thu Jul 11, 2019 12:17 am

Re: Threshold and activation energy

Postby Maya Pakulski 1D » Mon Oct 14, 2019 9:17 am

Threshold energy is the energy needed to make effective collisions while activation energy is the energy needed to make these collisions even occur. A molecule normally doesn't have enough threshold energy to make this occur so it needs activation energy to start these collisions.

Katherine Brenner 3H
Posts: 73
Joined: Wed Sep 18, 2019 12:18 am

Re: Threshold and activation energy

Postby Katherine Brenner 3H » Tue Oct 15, 2019 8:49 am

So a molecule uses activation energy to start making collisions but runs out of energy and thus uses threshold energy?

Amy Pham 1D
Posts: 88
Joined: Fri Aug 09, 2019 12:15 am

Re: Threshold and activation energy

Postby Amy Pham 1D » Wed Oct 16, 2019 12:34 am

Activation energy is the energy difference between reactants and products in a chemical reaction (energy needed to make the reaction occur), while threshold energy is the energy required for reactants to undergo successful collisions (existing kinetic energy + activation energy). Thus, threshold energy is greater than activation energy.


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