The vapor pressure of n-C5H12 at 25 degree C is 0.674 bar, and that of n-C6H14 is 0.198 bar. Calculate: (a) The partial pressure of each substance; (b) The total pressure over a solution containing x( n-C5H 12) = 0.25; (c) The composition of the vapor phase in equilibrium with the solution. Assume that these substances form an ideal solution. (a1) P(n-C5H12) (a2) P(n-C6H14) = (b) Ptot = (c) X(n-CH12) =