A possible reaction for converting methanol to ethanol is:

CO(g) + 2H2(g) + CH3OH(g) -----> C2H5OH(g) + H2O(g)

I completed parts A-C correctly, and found the following info:
delta H = -165.6 kJ
delta S = -227.4 J/K
delta G = -97.9 kJ

The next question is asking to estimate Kp for the reaction at 780K.
I'm not sure how to solve this part, can anyone help?

I tried using the deltaG=-RTlnK equation and got 1.27x10^7, but it was marked incorrect.

1 answer

Thanks for all of the information but it would have helped if you had shown how you obtained the 1.27 number. I used this
97900 = 8.314*780*lnK and obtained approx 4E6.