Arrhenius equation

Arrhenius Equation:

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Shanzey
Posts: 120
Joined: Wed Sep 18, 2019 12:20 am

Arrhenius equation

Postby Shanzey » Thu Mar 12, 2020 6:09 pm

What does the A value in the Arrhenius equation mean? Also when do we use this equation?

Naneeta Desar 1K
Posts: 106
Joined: Fri Aug 09, 2019 12:15 am

Re: Arrhenius equation

Postby Naneeta Desar 1K » Thu Mar 12, 2020 6:10 pm

A is the frequency of collisions with the correct orientation.

aishwarya_atmakuri
Posts: 101
Joined: Sat Jul 20, 2019 12:15 am

Re: Arrhenius equation

Postby aishwarya_atmakuri » Thu Mar 12, 2020 6:29 pm

A is a variable that represents the proportion of interactions that have the minimum activation energy and are in the right orientation.

Jared_Yuge
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Arrhenius equation

Postby Jared_Yuge » Thu Mar 12, 2020 7:53 pm

You use the Arrhenius equation when you need to determine the effect of a temp change on the rate constant, which changes the overall reaction rate.

Jared_Yuge
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Arrhenius equation

Postby Jared_Yuge » Thu Mar 12, 2020 7:54 pm

The rate constant is proportional to the reaction rate so if rate constant doubles so does the reaction rate.

Matt F
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Arrhenius equation

Postby Matt F » Fri Mar 13, 2020 10:58 am

A is considered the frequency factor or "pre-exponential" factor and includes the number of collisions with correct orientation. The Arrhenious equation is typically used with problems involving activation energy


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