What happens to boiling water if the pressure increases or decreases?

Answer 1

water boils when the vapour pressure becomes equal to the external pressure. So if we increase the pressure, the rate of boiling will increase. Think of the vapor pressure as the pressure that is needed to force a bubble to the surface.
it lowers

Answer 2

Pressure times Volume = Number of moles times Gas constant times Temperature

The constant will not change. The number of moles is assumed not to change in a closed container. The volume unchanging, if pressure increases then the temperature would theoretically have to increase, though artificially increasing pressure without changing the volume of the container, adding energy, or introducing additional matter is very difficult, if not impossible.

Answer 3

If pressure increases and temperature remains the same, then the water would stop boiling.

If pressure decreases and temperature remains the same, then the water would boil more and more ferochiously.

As water transforms to steam, this process takes up a lot of energy and this regulates the actual temperature of the water boiling. Water boiling at 1 Atm pressure will "never" be hotter than 100 degrees Celsius. This is the point where excess energy is transforming parts of the water into steam hence discouraging the temperature of the water to go beyond 100 degrees Celsius.

By increasing the atmospheric pressure, the temperature needed in order to transform water into steam also increases accordingly

Answer 4

Increasing the pressure the boiling point is increased (and inversely).

Answer 5

as pressure decreases water boils at lower temperatures. as pressure increases water boils at higher temperatures. Only at sea level does water boil at exactly 100 degrees C.