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### Topic: Demonstration of formula with Kx  (Read 601 times)

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#### samuelima10

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##### Demonstration of formula with Kx
« on: December 09, 2020, 10:28:54 PM »

#### billnotgatez

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##### Re: Demonstration of formula with Kx
« Reply #1 on: December 10, 2020, 01:26:41 AM »
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#### samuelima10

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##### Re: Demonstration of formula with Kx
« Reply #2 on: December 10, 2020, 07:22:48 AM »
but I was trying to solve the same thing as if it would solve van't Hoff's equation replacing Kp with Kx
Kp = Kx . (P/Po) ^Δn
ΔG = -R. T. ln kx. (P/Po)^Δn
Ln Kx = AG /-RT . (Po/P)^Δn

my problem is when applying the derivative, i have great difficulties in calculating

#### mjc123

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##### Re: Demonstration of formula with Kx
« Reply #3 on: December 10, 2020, 08:32:23 AM »
The last step is wrong. You should have written (for clarity)
ΔG° = -RT.ln{Kx.(P/P0)Δn} = RT{lnKx + Δn.ln(P/P0)}