K and Q at equilibrium


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Ekayana Sethi 2K
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K and Q at equilibrium

Postby Ekayana Sethi 2K » Thu Feb 22, 2018 9:28 am

At equilibrium is K=1? wouldnt that make Estandard 0? But if Q=1 is Q also at equilibrium? Wouldnt that make Erxn=Estandard?

RohanGupta1G
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Joined: Sat Jul 22, 2017 3:00 am

Re: K and Q at equilibrium

Postby RohanGupta1G » Thu Feb 22, 2018 9:34 am

Erxn is Estandard at equilibrium. Q=1 at equilibrium. This checks out mathematically using the equation Estandard=Erxn+rt/nf lnq. if q=1, then lnq=0 and Erxn=Estandard

McKenna disc 1C
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Re: K and Q at equilibrium

Postby McKenna disc 1C » Thu Feb 22, 2018 1:18 pm

RohanGupta1G wrote:Erxn is Estandard at equilibrium. Q=1 at equilibrium. This checks out mathematically using the equation Estandard=Erxn+rt/nf lnq. if q=1, then lnq=0 and Erxn=Estandard


I'm probably about 50% confident in my claim here but I feel like Q doesn't always have to equal 1 at equilibrium. Doesn't it just have to equal K? And K definitely does not have to equal 1. I'm just a little confused about what the original question is asking.

Sarah Rutzick 1L
Posts: 50
Joined: Tue Oct 10, 2017 7:13 am

Re: K and Q at equilibrium

Postby Sarah Rutzick 1L » Thu Feb 22, 2018 2:11 pm

K is equal to 1 at equilibrium, which would make Ecell 0 because there are no more electrons being transferred in the cell. I'm not sure whether Q is equal to 1 at equilibrium though.

Jessica Benitez 1K
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Re: K and Q at equilibrium

Postby Jessica Benitez 1K » Sun Feb 25, 2018 9:46 pm

For concentration cells, E° is always 0 V.

Susie Lee 2I
Posts: 20
Joined: Fri Sep 29, 2017 7:05 am

Re: K and Q at equilibrium

Postby Susie Lee 2I » Thu Mar 01, 2018 10:12 am

Is Q = 1 at equilibrium?


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