A solution at 107 C contains 50 mol% water (W) and 50 mol% formic acid (F). Using (2-72) with vapor pressure data and the

A solution at 107^οC contains 50 mol% water (W) and 50 mol% formic acid (F). Using (2-72) with vapor pressure data and the van Laar equation with AWF = -0.2935 and AFW = 0.2757: 

(a) Compute the bubble-point pressure. 

(b) Compute the dew-point pressure. 

(c) Determine if the mixture forms an azeotrope. If so, predict the azeotropic pressure at 107^οC and the composition.