## Problem 5.55

Savannah Mance 4G
Posts: 107
Joined: Fri Aug 30, 2019 12:17 am

### Problem 5.55

Can someone please explain how to do this problem I don't know how to do it with all of the given values. I'm really lost because there is no Kc value given either.

Ryan Narisma 4G
Posts: 104
Joined: Fri Aug 30, 2019 12:18 am

### Re: Problem 5.55

Hi Savannah Mance 4G! To answer your question, in this problem we are given the gibbs free energy values at 900K. From there we can calculate the gibbs free energy of the reaction at 900K. Once that is calculated, you can use the fact that:
$\Delta$G$^{\circ}$ = -RT ln K.
Isolate ln K and take the exponential on both sides to calculate K. After calculating K at 900K, use that value to determine the concentration of gases at equilibrium, but remember to determine which reactant is limiting (C or H2O). I hope this helps!