I have a question here:
What is the definition of bubble-point line?
a) The line that shows when the liquid begins to boil/evaporate
b) The vapor-mixture liquid region
c) Saturated liquid equilibrium line
d) None of the above
My textbook says it is saturated liquid equilibrium line, whereas googling says the temperature at which the liquid begins to boil or evaporate. Since the question asks for definition of bubble-point line, could it be a), c) or none of the above? This question seems confusing though.
Hope someone can clarify this. Thank you.