## 11.111

$\Delta G^{\circ}= \Delta H^{\circ} - T \Delta S^{\circ}$

$\Delta G^{\circ}= -RT\ln K$

$\Delta G^{\circ}= \sum \Delta G_{f}^{\circ}(products) - \sum \Delta G_{f}^{\circ}(reactants)$

Jesus Rodriguez 1J
Posts: 53
Joined: Sat Jul 22, 2017 3:00 am

### 11.111

I was wondering if someone could explain to how they solved for DeltaG2, I understand the setup of the problem but I'm not sure how they got rid of e in one of the very last steps.

Lena Nguyen 2H
Posts: 51
Joined: Fri Sep 29, 2017 7:06 am
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### Re: 11.111

To get rid of e, take the natural log of both sides to get ln 10 = (2.00 x 10^5 + deltaG2)/(8.3145 x 298.15) and solve for deltaG2 from there.

Jenny Cheng 2K
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Joined: Fri Sep 29, 2017 7:05 am
Been upvoted: 1 time

### Re: 11.111

Since ΔG(1) is given, you can solve for k(1). The relationship between k(1) and k(2) is given, with k(2)=k(1)/10. You can solve for ΔG(2) using k(2). For this problem, you should use ΔG=-RT ln(k).

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

### Re: 11.111

When you take the natural log (ln) of both sides, you get rid of e because ln is equal to loge. Once you do this, you just solve for deltaG.

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