A

Arrhenius Equation:

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205150314
Posts: 106
Joined: Wed Feb 20, 2019 12:16 am

A

Postby 205150314 » Sun Mar 08, 2020 9:26 pm

is A the initial concentration or given concentrations when plugging them into equations? or is it not even concentrations?

205007651
Posts: 53
Joined: Tue Nov 13, 2018 12:17 am

Re: A

Postby 205007651 » Sun Mar 08, 2020 9:29 pm

A represents the reactant molar concentration. If its [a]0 then it's the initial concentration.

Ashley Alvarado 2C
Posts: 45
Joined: Sat Aug 17, 2019 12:16 am

Re: A

Postby Ashley Alvarado 2C » Sun Mar 08, 2020 9:37 pm

[A] is the concentration of the reactants and [A]0 is the initial concentration.

rabiasumar2E
Posts: 108
Joined: Thu Jul 11, 2019 12:15 am

Re: A

Postby rabiasumar2E » Sun Mar 08, 2020 9:51 pm

[A]0 represents the initial concentration and [A] represents the concentration of the reactants!

Frank He 4G
Posts: 50
Joined: Tue Nov 12, 2019 12:19 am

Re: A

Postby Frank He 4G » Sun Mar 08, 2020 9:55 pm

Also note if you were ever confused that A naught is how we refer to [A]0, and that the little 0 symbol, or naught, does often mean the initial or starting point when it is in the lower position (whereas it would usually mean under standard conditions if it were in the upper position).

Cole Woulbroun 1J
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Joined: Thu Jul 25, 2019 12:16 am

Re: A

Postby Cole Woulbroun 1J » Sun Mar 08, 2020 9:58 pm

In the Arrhenius equation, A does not represent concentrations. Instead, it is a reaction-based constant that describes the spatial requirements for the reaction to occur. If k is large, meaning that the reaction rate will be large, then A will also be large. A large A tells us that the spatial requirements for the reaction to occur are not demanding, whereas a small A tells us that they are.

Brandon Valafar
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Re: A

Postby Brandon Valafar » Sun Mar 08, 2020 10:02 pm

A represents the concentration of the reactants and A0 represents the initial concentration.

kristi le 2F
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: A

Postby kristi le 2F » Sun Mar 08, 2020 10:26 pm

Also, A varies by reaction but is mostly independent of temperature.

Niharika 1H
Posts: 50
Joined: Thu Jul 25, 2019 12:16 am

Re: A

Postby Niharika 1H » Sun Mar 08, 2020 10:26 pm

A is the concentration, while A0 is the initial concentration.


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