02/20/25

Question 1

what is the triple point in a PT diagram

Answer 1

it is the point where all three phases are in equilibrium with one another

Question 2

what is the critical point

Answer 2

it is at a high pressure and temperature, where everything past it is a super critical region where molecules behave differently

Question 3

for the phase coexistence line between the gas and liquid states, what does the line between temperature and pressure tell us?

Answer 3

it can tell us the vapor pressure or the boiling point

Question 4

the slope being positive between gas and liquid states tells us what

Answer 4

it tells us that an increase in temperature will give an increase in vapor pressure

or it will tell us that an increase in pressure will give an increase in boiling point

Question 5

for the solid to gas phase line, at a given temperature we can figure out the

Answer 5

vapor pressure of the solid

Question 6

for the solid to gas phase line, at a given pressure, we can figure out the

Answer 6

sublimation temperature

Question 7

for a solid to liquid phase line, at a given pressure we can figure out the

Answer 7

melting temperature

Question 8

for a solid to liquid phase line, when the density of the solid is higher than the liquid then the slope is

Answer 8

positive, so higher pressures mean higher melting temperatures

Question 9

for a solid to liquid phase line, when the density of the solid is less than the liquid then the slope is

Answer 9

negative, so higher pressures would result in lower melting temperatures