Standard State with Nernst Equation


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Sarah Sharma 2J
Posts: 33
Joined: Fri Sep 29, 2017 7:05 am

Standard State with Nernst Equation

Postby Sarah Sharma 2J » Fri Feb 23, 2018 11:28 am

When given a reaction and we are asked to calculate using the Nernst equation, when can we assume that it is in standard state if it doesn't specify?

Payton Schwesinger 1J
Posts: 45
Joined: Fri Sep 29, 2017 7:04 am

Re: Standard State with Nernst Equation

Postby Payton Schwesinger 1J » Fri Feb 23, 2018 12:17 pm

I think you assume that it is standard states unless it is otherwise specified- for anything that is not in standard state they usually give you the concentrations/partial pressures.

Ivy Lu 1C
Posts: 54
Joined: Thu Jul 27, 2017 3:00 am

Re: Standard State with Nernst Equation

Postby Ivy Lu 1C » Fri Feb 23, 2018 2:53 pm

It should be safe to assume that that it's in standard state, if no additional information about concentration or partial pressure is given.

Angel Gomez 1K
Posts: 36
Joined: Fri Sep 29, 2017 7:04 am

Re: Standard State with Nernst Equation

Postby Angel Gomez 1K » Fri Feb 23, 2018 5:38 pm

I believe that the simplified equation of E=Enot-RT/nF*lnQ, which is E=Enot-0.00591/n * log Q, is given to us specifically so that we don't have to plug in values for T, since it's simplified for use under STP.

kaushalrao2H
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Joined: Thu Jul 13, 2017 3:00 am
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Re: Standard State with Nernst Equation

Postby kaushalrao2H » Fri Feb 23, 2018 6:46 pm

only assume that the reaction is not at standard conditions when the prompt itself gives some conditions (such as varying concentrations of reactant/product).


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