Question

and B are volatile liquids. In the figure below, the partial pressure of A and B in a liquid solution of these two substances (at T = 40.°C) is plotted against XX, the mole fraction of A in the liquid solution 400. p(tor) Ps 300. 200. 100. 0. 0.0 0.2 04 1.0 0.6 0.8 mole fraction A a) Do A and B form an ideal liquid solution (yes/no)? [4 points) b) What is the value for peº, the vapor pressure of pure liquid B, at T = 40.0 °C? 16 points)

Answer 1

a) A and B forming an ideal solution , for an ideal solution molefraction and vapor pressure graph is a linear change a hence it is an ideal solution for non ideal solution graph is non linear

b)vapor pressure of pure B is 400 torr