[samuelima10]

please help me demonstrate this equation

[billnotgatez]

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[samuelima10]

sorry, I really hadn't read the rules.
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]

The last step is wrong. You should have written (for clarity)
ΔG° = -RT.ln{K_x.(P/P₀)^Δn} = RT{lnK_x + Δn.ln(P/P₀)}