Given the phase diagram of CO2, answer the following: a) Determine F at points (a), (b) (c) and (d). b) What is the physical state of CO2 at 30°C and 1 atm? c) At what I and P would the three phases of CO2 occur together in equilibrium? +

Question 1. Derive an expression for the vapor density at the boiling point as a function of temperature. Assume that the ideal gas law is valid. The vapor density of water at 25°C is 23.4 g/m³. Calculate the vapor pressure and vapor density at 50°C.

Solve the following questions related to fugacity of a liquid. Assume that liquid is incompressible and thus the = 1 molar volume of the liquid is constant. (You may assume that Psat is low enough that sat for all parts of this problem. You will also need to look up or calculate the molar volume of water.) You are given a container partially filled with water at 25°C. You then proceed to pump all of the air out of the container, leaving a pool of water at the bottom, and a vacuum (P=0) at the top (see first panel in figure below). You then turn off the pump and seal the container. You wait a short while and the water in the bottom starts to evaporate (see second panel) until it achieves phase equilibrium (see third panel). Assuming no change in temperature and no significant change in volume of the water, what is the pressure in the box? (Hint: you must balance fugacity between the liquid and vapor phases. You may also assume the vapor phase is an ideal gas, and the liquid is an ideal…