Calculate the bubble pressure of a binary system. The mole fraction of component 1 in the liquid phase is 0.40 and the pressure is 70 kPa. The saturation pressures:

\[P_1^{sat}\,=\, exp\left(14.3\,-\,\frac{2940}{T+224}\right) \;\;\;\;\;\;\;\; P_2^{sat}\,=\,exp\left(14.2-\frac{2975}{T+209}\right)\]

\(T\) is in \(^oC\), \(P\) is in kPa