Question

Does increased atmospheric pressure increase or decrease the boiling point of water? why?

Answer 1

Increased atmospheric pressure will increase the boiling point of water

Water vapor has liquid phase and a vapor phase

As pressure is increased vapor particles will return to the liquid phase

An oversimplified view is to consider the activity of individual molecules of water - when molecules of water are heated they are more active and more likely to escape from the liquid phase to the vapor phase

Answer 2

Increased atmospheric pressure increases the boiling point of water. Conversely, decreased atmospheric pressure decreases the boiling point of water.

Step-by-step explanation:

The boiling point of water is affected by atmospheric pressure. As pressure increases, the boiling point of water also increases. Conversely, as pressure decreases, the boiling point of water decreases. This is because the boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the atmospheric pressure.

At high altitudes where atmospheric pressure is lower, the boiling point of water is lower. This is why water boils at a lower temperature in high altitude locations such as the Rockies or the Himalayas. In contrast, pressure cookers can raise the boiling point of water by allowing pressure inside the cooker to exceed atmospheric pressure, thus cooking food more rapidly.