Problem 3Two chemicals, A and B when mixed produced an almost perfect ideal solution. The vapour pressures of A and B were 25.4 kPa and 96.1 kPa respectively at 298

K. (b) Indicate on your phase diagram the compositions (xA, YA, ZA) of the piston at the given pressure. What is the total number of moles of A and the total number of moles of B in the piston? What is the number of moles of gas and number of moles of liguid in the piston? What is the number of moles of gaseous chemical A and liquid chemical A in the piston? What is the number of moles of gaseous chemical B and liquid chemical B in the piston? What is the approximate volume (in liters) of the piston? (hint: ignore the volume of the liquid). (a) Draw a pressure composition phase diagram for 298 K (full marks if drawn correctly in Excel). A solution containing a total of 20 mmol = na + n(b)was prepared in a piston with the composition of Z(A) = 0.6481. The total pressure on the piston was adjusted to 40.66 kPa.