question regarding water in a vacuum.....its boiling point....?

Question

okay if you put water in a partial vacuum where the atmosphere is reduced a little then the boiling point of the water will be reduced.........is this correct? and if you lower the pressure enough inside or remove enough air then the boiling point will get very near the freezing point. when water boils it turns to a gaseous state and gives up and absorbs thermal energy very quickly......or at least faster then it would if it was a liquid.....am i correct. it is true that if air is in a vacuum that is has half the pressure then what is outside it the air inside the vacuum will balance out and become the same temp as the air outside the vaccum even though it is half the pressure.

say i have a big sealed container and i have 2 bowls in this container........one bowl contains water and an electronic heating element and he other has some cubes of ice. if i was to pull a vacuum and remove the air then turn on the electric heating element then the water would boil and turn to vapor then it would quickly move to the other bowl and condense back into water.......am i correct.? i am for sure it would condense near the ice but how quickly would it move from the heating element to the ice.

Answer 1

This equation relates to phase diagrams showing the relationship of Pressure and Temperature in substances.

In our class, I show a demonstration of putting a beaker of water into a glass chamber and then pull a vacuum. The water will start to boil at room temperaure. This is a practical example of the gas laws and the low boiling point of water in reduced pressure.