1. The problem statement, all variables and given/known data Reaction: A = B + C Reaction is run in an isothermal constant volume reaction vessel. Initially, before any reaction has occurred, the vessel is filled with pure A at 1 atm and 400K. The equilibrium conversion, epsilon and final pressure of the system is to be determined. 2. Relevant equations I have no idea where to progress from where I am at. My attempt to the question is descried below. 3. The attempt at a solution Component Initial Dissociation yi A 1 1-epsilon (1-eps)/(1+eps) B 0 epsilon eps/(1+eps) C 0 epsilon eps/(1+eps) Ka = Kp*Ky*Kf/Kf0 Kf0 based on fugacity at 1 atm Kp = (P2/1)1 Ky = (eps^2/(1+eps)^2) Kf = still unknown but based on (f/p) Ka = 1.0 since ln(Ka1/Ka2) = integral(H/RT) dt = 0 for isothermal process Ka1 = Ka2 where Ka = 1 for standard state of p=1 atm and T = 400K Would anyone on here have any idea how to go about this question?