Pure liquid A has vapor pressure PA and pure liquid B has vapor pressure PB When mixing 2 moles of A and 2 moles of B to form an ideal solution, what is the vapor pressure P of the solution ? * * (a) P> PA + 2 PB * * (c) P = 2 PA + 2 PB (b) P (d) P = = 2 PA* + 2 PB* * PA + PB