At what temperature will water vaporize in a 28 in hg vacuum?

To understand at what temperature water will vaporize in a 28 inHg vacuum, it's essential to consider the relationship between pressure and boiling point. As atmospheric pressure decreases, the boiling point of water also decreases.

At standard atmospheric pressure (about 29.92 inHg), water boils at 212 degrees Fahrenheit. However, in a vacuum of 28 inHg, the pressure is lower than standard atmospheric conditions. This reduction in pressure causes water to vaporize at a much lower temperature.

At 28 inHg, the boiling point of water is approximately 10 degrees Fahrenheit. This is because the lower pressure allows water molecules to escape into the vapor phase at a lower kinetic energy, which corresponds to a lower temperature. Therefore, in a vacuum of 28 inHg, water will vaporize at around 10 degrees Fahrenheit.

Understanding these principles of vaporization in relation to pressure is crucial for anyone involved in fields such as HVAC or refrigeration, where gas laws and phase changes of substances are fundamental.