Chemistry Forums for Students > Physical Chemistry Forum

Demonstration of formula with Kx

(1/1)

samuelima10:



please help me demonstrate this equation

billnotgatez:
You have to show your attempts or thoughts at solving the question to receive help.
This is a forum policy.
Click on the link near the top center of the forum page.
Forum Rules: Read This Before Posting.
http://www.chemicalforums.com/index.php?topic=65859.0

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{Kx.(P/P0)Δn} = RT{lnKx + Δn.ln(P/P0)}

Navigation

[0] Message Index