Answer with True or False and CORRECT the false statements.

a$)$ Temperature, pressure, and composition of two phases at equilibrium remain unchanged.

b$)$ Mass transfer depends on the departure of the system from equilibrium.

c$)$ When a liquid is heated up slowly at constant pressure, the temperature at which the first vapor bubble forms is the bubble$-$point temperature of the liquid at the given

pressure.

d$)$ When a vapor is cooled down slowly at constant pressure, the temperature at which the

first liquid droplet appears is the dew$-$point temperature of the vapor at the given

pressure.

e$)$ When a liquid$/$vapor mixture is compressed at constant temperature, the pressure at

which the last vapor bubble disappears is the bubble$-$point pressure of the liquid at the

given temperature.

f$)$ A tie line is a line connecting the composition of two phases at equilibrium at a given

temperature and pressure.

g$)$ A binary mixture can have more than one critical point.

h$)$ A pure substance could have more than one critical point.

i$)$ An azeotrope is the point at which the composition of the liquid is the same as that for

vapor.

j$)$ Under some conditions, a pure substance can form an azeotrope.

k$)$ If the mole fraction of component $1$ in the vapor phase is more than that of component

$2,$ then component $1$ is more volatile than component $2.$

l$)$ In Raoult$$s law, we assume that both vapor and liquid phases are ideal.

m$)$ At constant P$,$ the bubble point equals the dew point T$.$

n$)$ For a binary mixture, the bubble point P is higher than the dew point P at fixed T$.$

$1$

o$)$ If the pressure of a mixture is higher than the bubble point pressure, the mixture is a subcooled liquid.