Arrhenius Equation:

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Letty Liu 2C
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Joined: Fri Aug 09, 2019 12:16 am


Postby Letty Liu 2C » Tue Mar 10, 2020 11:45 pm

How does a catalyst affect (a) the rate of the reverse reaction; (b) the value of delta H for the reaction?

Does the catalyst slow the rate of the reverse reaction and have no change on delta H?

Jason Wu 1E
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Joined: Thu Jul 25, 2019 12:15 am

Re: 7E.1

Postby Jason Wu 1E » Tue Mar 10, 2020 11:56 pm

Catalysts will still increase the rate of the reverse reaction. This is because a Catalyst will lower the activation energy of a reaction. Thus it will still be a decrease in Ea going in reverse. Delta H will have no change

Posts: 149
Joined: Thu Jul 25, 2019 12:17 am

Re: 7E.1

Postby jisulee1C » Wed Mar 11, 2020 12:06 am

Because a catalyst only affects the reaction rate because it provides a separate pathway with a lower activation energy the reaction rates will increase (be faster) while changing the rates (due to kinetics) has no effect on thermodynamics and therefore there is no change for delta H of the reaction.

Zoe Gleason 4F
Posts: 51
Joined: Tue Jul 23, 2019 12:15 am

Re: 7E.1

Postby Zoe Gleason 4F » Wed Mar 11, 2020 12:21 am

A catalyst will increase the reaction rate of both directions, because it lowers the activation energy. Delta H is not changed because that is in relation to thermodynamics, and therefore will not affect the reaction rates.

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