This video shows how to construct the T-x-y and P-x-y diagram using excel and demonstrate how use Goal seek to find equilibria data.


Assume Raoult’s law to be valid for the system benzene (1) – ethyl benzene (2) and the vapour pressures are given by Antoine equations
ln P1s = 13.8858 - (2788.51/(T-52.41)
ln P2s = 14.0045- (3279.47/(T-60.00)

Where P is in kPa and T is in K. Construct the following
The P-x-y diagram at 373 K
The T-x-y diagram at 101.3 kPa