What would be the effect of a pressure decrease on the boilling point of a liqiud in an open container?

Answer 1

The boiling point would be decreased. Boiling occurs at the point where the pressure of the liquid is equal to the pressure of the atmosphere; therefore, if the atmospheric pressure dropped, the boiling point would drop (because it wouldn't take as long for the liquid to gain the correct pressure).

Answer 2

Depends on how you define terms. A "boiling point" is taken as the temperature at which a liquid exerts a vapor pressure of 1 ATM. In that point, there is no effect. In terms of liquids exerting vapor pressures of other than 1 ATM, the effect would be to lower the boiling point.

Answer 3

the boiling point would decrease. as an example, water boils at 100 degrees centigrade at sea level, but at less than 100 degrees at higher elevations (because the ambient air pressure is lower at higher elevations).

Answer 4

its boiling point would increase.

im sorry but if with increased altitude/pressure boiling points decreases, then decreasing altitude/pressure would increase the boiling point in theory.