## 14.31

$E_{cell} = E_{cell}^{\circ}-\frac{RT}{nF}\ln Q$

Wenting Hu 2H
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Joined: Fri Sep 29, 2017 7:06 am

### 14.31

for 14.31 how do we determine if the reaction has k>1? Is it cathode/anode?

Samantha Kan 2L
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Joined: Sat Jul 22, 2017 3:00 am

### Re: 14.31

You use E(cathode)-E(anode) to find the standard E. If E is positive, it favors the products so k>1.

Luke Bricca 1H
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Joined: Fri Sep 29, 2017 7:06 am

### Re: 14.31

Furthermore, you could also solve the Nernst equation for K which would show its sign. This would be more work and is inefficient but guarantees a correct answer.

Phillip Winters 2F
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Joined: Fri Sep 29, 2017 7:05 am

### Re: 14.31

Also if K>1, meaning that E>1 as well, then the reaction would be spontaneous in the forward direction

Ashley Macabasco 2K
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### Re: 14.31

If E(cathode)>E(anode) then K>1 and products are favored.

Matthew Lee 3L
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Joined: Fri Sep 29, 2017 7:07 am

### Re: 14.31

If the E is positive, this means that deltaG is negative which means the reaction is favorable. When it is favorable, there will be a higher concentration of products, causing K to be greater than 1.

204932558
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### Re: 14.31

If Ecell is positive, G is negative according to G=-nEf. It means the forward reaction is spontaneous and therefore favored, resulting in a K greater than 1.

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